diff --git a/dlls/msi/action.c b/dlls/msi/action.c
index 472effca801..d1c46b8ce94 100644
--- a/dlls/msi/action.c
+++ b/dlls/msi/action.c
@@ -2070,7 +2070,6 @@ DWORD msi_get_disk_file_size( LPCWSTR filename )
         return INVALID_FILE_SIZE;
 
     size = GetFileSize( file, NULL );
-    TRACE("size is %u\n", size);
     CloseHandle( file );
     return size;
 }
@@ -2081,7 +2080,7 @@ BOOL msi_file_hash_matches( MSIFILE *file )
     MSIFILEHASHINFO hash;
 
     hash.dwFileHashInfoSize = sizeof(MSIFILEHASHINFO);
-    r = MsiGetFileHashW( file->TargetPath, 0, &hash );
+    r = msi_get_filehash( file->TargetPath, &hash );
     if (r != ERROR_SUCCESS)
         return FALSE;
 
@@ -2154,8 +2153,6 @@ static void set_target_path( MSIPACKAGE *package, MSIFILE *file )
 {
     MSIASSEMBLY *assembly = file->Component->assembly;
 
-    TRACE("file %s is named %s\n", debugstr_w(file->File), debugstr_w(file->FileName));
-
     msi_free( file->TargetPath );
     if (assembly && !assembly->application)
     {
@@ -2169,7 +2166,7 @@ static void set_target_path( MSIPACKAGE *package, MSIFILE *file )
         file->TargetPath = msi_build_directory_name( 2, dir, file->FileName );
     }
 
-    TRACE("resolves to %s\n", debugstr_w(file->TargetPath));
+    TRACE("file %s resolves to %s\n", debugstr_w(file->File), debugstr_w(file->TargetPath));
 }
 
 static UINT calculate_file_cost( MSIPACKAGE *package )
@@ -2197,6 +2194,7 @@ static UINT calculate_file_cost( MSIPACKAGE *package )
             continue;
         }
         file_size = msi_get_disk_file_size( file->TargetPath );
+        TRACE("%s (size %u)\n", debugstr_w(file->TargetPath), file_size);
 
         if (file->Version)
         {
diff --git a/dlls/msi/files.c b/dlls/msi/files.c
index 62e5f43606f..531ce38c595 100644
--- a/dlls/msi/files.c
+++ b/dlls/msi/files.c
@@ -69,34 +69,38 @@ static msi_file_state calculate_install_state( MSIPACKAGE *package, MSIFILE *fil
     VS_FIXEDFILEINFO *file_version;
     WCHAR *font_version;
     msi_file_state state;
+    DWORD size;
 
     comp->Action = msi_get_component_action( package, comp );
     if (comp->Action != INSTALLSTATE_LOCAL || (comp->assembly && comp->assembly->installed))
     {
-        TRACE("file %s is not scheduled for install\n", debugstr_w(file->File));
+        TRACE("skipping %s (not scheduled for install)\n", debugstr_w(file->File));
         return msifs_skipped;
     }
     if ((comp->assembly && !comp->assembly->application && !comp->assembly->installed) ||
         GetFileAttributesW( file->TargetPath ) == INVALID_FILE_ATTRIBUTES)
     {
-        TRACE("file %s is missing\n", debugstr_w(file->File));
+        TRACE("installing %s (missing)\n", debugstr_w(file->File));
         return msifs_missing;
     }
     if (file->Version)
     {
         if ((file_version = msi_get_disk_file_version( file->TargetPath )))
         {
-            TRACE("new %s old %u.%u.%u.%u\n", debugstr_w(file->Version),
-                  HIWORD(file_version->dwFileVersionMS),
-                  LOWORD(file_version->dwFileVersionMS),
-                  HIWORD(file_version->dwFileVersionLS),
-                  LOWORD(file_version->dwFileVersionLS));
-
             if (msi_compare_file_versions( file_version, file->Version ) < 0)
+            {
+                TRACE("overwriting %s (new version %s old version %u.%u.%u.%u)\n",
+                      debugstr_w(file->File), debugstr_w(file->Version),
+                      HIWORD(file_version->dwFileVersionMS), LOWORD(file_version->dwFileVersionMS),
+                      HIWORD(file_version->dwFileVersionLS), LOWORD(file_version->dwFileVersionLS));
                 state = msifs_overwrite;
+            }
             else
             {
-                TRACE("destination file version equal or greater, not overwriting\n");
+                TRACE("keeping %s (new version %s old version %u.%u.%u.%u)\n",
+                      debugstr_w(file->File), debugstr_w(file->Version),
+                      HIWORD(file_version->dwFileVersionMS), LOWORD(file_version->dwFileVersionMS),
+                      HIWORD(file_version->dwFileVersionLS), LOWORD(file_version->dwFileVersionLS));
                 state = msifs_present;
             }
             msi_free( file_version );
@@ -104,37 +108,46 @@ static msi_file_state calculate_install_state( MSIPACKAGE *package, MSIFILE *fil
         }
         else if ((font_version = msi_font_version_from_file( file->TargetPath )))
         {
-            TRACE("new %s old %s\n", debugstr_w(file->Version), debugstr_w(font_version));
-
             if (msi_compare_font_versions( font_version, file->Version ) < 0)
+            {
+                TRACE("overwriting %s (new version %s old version %u.%u.%u.%u)\n",
+                      debugstr_w(file->File), debugstr_w(file->Version),
+                      HIWORD(file_version->dwFileVersionMS), LOWORD(file_version->dwFileVersionMS),
+                      HIWORD(file_version->dwFileVersionLS), LOWORD(file_version->dwFileVersionLS));
                 state = msifs_overwrite;
+            }
             else
             {
-                TRACE("destination file version equal or greater, not overwriting\n");
+                TRACE("keeping %s (new version %s old version %u.%u.%u.%u)\n",
+                      debugstr_w(file->File), debugstr_w(file->Version),
+                      HIWORD(file_version->dwFileVersionMS), LOWORD(file_version->dwFileVersionMS),
+                      HIWORD(file_version->dwFileVersionLS), LOWORD(file_version->dwFileVersionLS));
                 state = msifs_present;
             }
             msi_free( font_version );
             return state;
         }
     }
-    if (msi_get_disk_file_size( file->TargetPath ) != file->FileSize)
+    if ((size = msi_get_disk_file_size( file->TargetPath )) != file->FileSize)
     {
+        TRACE("overwriting %s (old size %u new size %u)\n", debugstr_w(file->File), size, file->FileSize);
         return msifs_overwrite;
     }
     if (file->hash.dwFileHashInfoSize)
     {
         if (msi_file_hash_matches( file ))
         {
-            TRACE("file hashes match, not overwriting\n");
+            TRACE("keeping %s (hash match)\n", debugstr_w(file->File));
             return msifs_hashmatch;
         }
         else
         {
-            TRACE("file hashes do not match, overwriting\n");
+            TRACE("overwriting %s (hash mismatch)\n", debugstr_w(file->File));
             return msifs_overwrite;
         }
     }
     /* assume present */
+    TRACE("keeping %s\n", debugstr_w(file->File));
     return msifs_present;
 }
 
diff --git a/dlls/msi/font.c b/dlls/msi/font.c
index 0b728a35567..25634512ab0 100644
--- a/dlls/msi/font.c
+++ b/dlls/msi/font.c
@@ -172,7 +172,6 @@ static WCHAR *load_ttf_name_id( const WCHAR *filename, DWORD id )
 
 end:
     CloseHandle(handle);
-    TRACE("Returning %s\n", debugstr_w(ret));
     return ret;
 }
 
diff --git a/dlls/msi/msi.c b/dlls/msi/msi.c
index afd92da5078..aaa69742915 100644
--- a/dlls/msi/msi.c
+++ b/dlls/msi/msi.c
@@ -4013,17 +4013,55 @@ extern VOID WINAPI MD5Init( MD5_CTX *);
 extern VOID WINAPI MD5Update( MD5_CTX *, const unsigned char *, unsigned int );
 extern VOID WINAPI MD5Final( MD5_CTX *);
 
-/***********************************************************************
- * MsiGetFileHashW            [MSI.@]
- */
-UINT WINAPI MsiGetFileHashW( LPCWSTR szFilePath, DWORD dwOptions,
-                             PMSIFILEHASHINFO pHash )
+UINT msi_get_filehash( const WCHAR *path, MSIFILEHASHINFO *hash )
 {
     HANDLE handle, mapping;
     void *p;
     DWORD length;
     UINT r = ERROR_FUNCTION_FAILED;
 
+    handle = CreateFileW( path, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_DELETE, NULL, OPEN_EXISTING, 0, NULL );
+    if (handle == INVALID_HANDLE_VALUE)
+    {
+        WARN("can't open file %u\n", GetLastError());
+        return ERROR_FILE_NOT_FOUND;
+    }
+    if ((length = GetFileSize( handle, NULL )))
+    {
+        if ((mapping = CreateFileMappingW( handle, NULL, PAGE_READONLY, 0, 0, NULL )))
+        {
+            if ((p = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, length )))
+            {
+                MD5_CTX ctx;
+
+                MD5Init( &ctx );
+                MD5Update( &ctx, p, length );
+                MD5Final( &ctx );
+                UnmapViewOfFile( p );
+
+                memcpy( hash->dwData, ctx.digest, sizeof(hash->dwData) );
+                r = ERROR_SUCCESS;
+            }
+            CloseHandle( mapping );
+        }
+    }
+    else
+    {
+        /* Empty file -> set hash to 0 */
+        memset( hash->dwData, 0, sizeof(hash->dwData) );
+        r = ERROR_SUCCESS;
+    }
+
+    CloseHandle( handle );
+    return r;
+}
+
+/***********************************************************************
+ * MsiGetFileHashW            [MSI.@]
+ */
+UINT WINAPI MsiGetFileHashW( LPCWSTR szFilePath, DWORD dwOptions,
+                             PMSIFILEHASHINFO pHash )
+{
     TRACE("%s %08x %p\n", debugstr_w(szFilePath), dwOptions, pHash );
 
     if (!szFilePath)
@@ -4039,46 +4077,7 @@ UINT WINAPI MsiGetFileHashW( LPCWSTR szFilePath, DWORD dwOptions,
     if (pHash->dwFileHashInfoSize < sizeof *pHash)
         return ERROR_INVALID_PARAMETER;
 
-    handle = CreateFileW( szFilePath, GENERIC_READ,
-                          FILE_SHARE_READ | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, 0, NULL );
-    if (handle == INVALID_HANDLE_VALUE)
-    {
-        WARN("can't open file %u\n", GetLastError());
-        return ERROR_FILE_NOT_FOUND;
-    }
-    length = GetFileSize( handle, NULL );
-
-    if (length)
-    {
-        mapping = CreateFileMappingW( handle, NULL, PAGE_READONLY, 0, 0, NULL );
-        if (mapping)
-        {
-            p = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, length );
-            if (p)
-            {
-                MD5_CTX ctx;
-
-                MD5Init( &ctx );
-                MD5Update( &ctx, p, length );
-                MD5Final( &ctx );
-                UnmapViewOfFile( p );
-
-                memcpy( pHash->dwData, ctx.digest, sizeof pHash->dwData );
-                r = ERROR_SUCCESS;
-            }
-            CloseHandle( mapping );
-        }
-    }
-    else
-    {
-        /* Empty file -> set hash to 0 */
-        memset( pHash->dwData, 0, sizeof pHash->dwData );
-        r = ERROR_SUCCESS;
-    }
-
-    CloseHandle( handle );
-
-    return r;
+    return msi_get_filehash( szFilePath, pHash );
 }
 
 /***********************************************************************
diff --git a/dlls/msi/msipriv.h b/dlls/msi/msipriv.h
index a69ddb022c9..45a251d2d21 100644
--- a/dlls/msi/msipriv.h
+++ b/dlls/msi/msipriv.h
@@ -937,6 +937,7 @@ extern int msi_compare_file_versions(VS_FIXEDFILEINFO *, const WCHAR *) DECLSPEC
 extern int msi_compare_font_versions(const WCHAR *, const WCHAR *) DECLSPEC_HIDDEN;
 extern DWORD msi_get_disk_file_size(LPCWSTR) DECLSPEC_HIDDEN;
 extern BOOL msi_file_hash_matches(MSIFILE *) DECLSPEC_HIDDEN;
+extern UINT msi_get_filehash(const WCHAR *, MSIFILEHASHINFO *) DECLSPEC_HIDDEN;
 
 extern LONG msi_reg_set_val_str( HKEY hkey, LPCWSTR name, LPCWSTR value ) DECLSPEC_HIDDEN;
 extern LONG msi_reg_set_val_multi_str( HKEY hkey, LPCWSTR name, LPCWSTR value ) DECLSPEC_HIDDEN;
diff --git a/dlls/msi/patch.c b/dlls/msi/patch.c
index 56bc5b4beaf..7c874c642d0 100644
--- a/dlls/msi/patch.c
+++ b/dlls/msi/patch.c
@@ -888,7 +888,7 @@ static UINT msi_apply_patch_package( MSIPACKAGE *package, const WCHAR *file )
     MSIPATCHINFO *patch = NULL;
     UINT r = ERROR_SUCCESS;
 
-    TRACE("%p %s\n", package, debugstr_w(file));
+    TRACE("%p, %s\n", package, debugstr_w(file));
 
     r = MSI_OpenDatabaseW( file, MSIDBOPEN_READONLY + MSIDBOPEN_PATCHFILE, &patch_db );
     if (r != ERROR_SUCCESS)
@@ -1003,6 +1003,8 @@ UINT msi_apply_registered_patch( MSIPACKAGE *package, LPCWSTR patch_code )
     MSIPATCHINFO *patch_info;
     MSISUMMARYINFO *si;
 
+    TRACE("%p, %s\n", package, debugstr_w(patch_code));
+
     len = sizeof(patch_file) / sizeof(WCHAR);
     r = MsiGetPatchInfoExW( patch_code, package->ProductCode, NULL, package->Context,
                             INSTALLPROPERTY_LOCALPACKAGEW, patch_file, &len );