diff --git a/aegisub/src/audio_provider_ffmpegsource.cpp b/aegisub/src/audio_provider_ffmpegsource.cpp
index 50433db62..449aeaf96 100644
--- a/aegisub/src/audio_provider_ffmpegsource.cpp
+++ b/aegisub/src/audio_provider_ffmpegsource.cpp
@@ -142,7 +142,9 @@ void FFmpegSourceAudioProvider::LoadAudio(Aegisub::String filename) {
 	}
 
 	// update access time of index file so it won't get cleaned away
-	wxFileName(CacheName).Touch();
+	if (!wxFileName(CacheName).Touch()) {
+		// warn user?
+	}
 
 	// FIXME: provide a way to choose which audio track to load?
 	int TrackNumber = FFMS_GetFirstTrackOfType(Index, FFMS_TYPE_AUDIO, FFMSErrMsg, MsgSize);
diff --git a/aegisub/src/ffmpegsource_common.cpp b/aegisub/src/ffmpegsource_common.cpp
index f2be3f12b..26f168718 100644
--- a/aegisub/src/ffmpegsource_common.cpp
+++ b/aegisub/src/ffmpegsource_common.cpp
@@ -95,7 +95,7 @@ FFIndex *FFmpegSourceProvider::DoIndexing(FFIndex *Index, wxString FileNameWX, w
 
 	// write index to disk for later use
 	// ignore write errors for now
-	FFMS_WriteIndex(CacheName.char_str(), Index, FFMSErrMsg, MsgSize);
+	FFMS_WriteIndex(CacheName.utf8_str(), Index, FFMSErrMsg, MsgSize);
 	/*if (FFMS_WriteIndex(CacheName.char_str(), Index, FFMSErrMsg, MsgSize)) {
 		wxString temp(FFMSErrMsg, wxConvUTF8);
 		MsgString << _T("Failed to write index: ") << temp;
diff --git a/aegisub/src/ffmpegsource_common.h b/aegisub/src/ffmpegsource_common.h
index 80d4f9fcf..a45da469f 100644
--- a/aegisub/src/ffmpegsource_common.h
+++ b/aegisub/src/ffmpegsource_common.h
@@ -41,6 +41,7 @@
 #include <wx/wxprec.h>
 #include <wx/thread.h>
 #include "include/aegisub/aegisub.h"
+#define FFMS_BETA_10_COMPAT
 #include <ffms.h>
 #include "dialog_progress.h"
 
diff --git a/aegisub/src/video_provider_ffmpegsource.cpp b/aegisub/src/video_provider_ffmpegsource.cpp
index 18e80d8c6..4256ab775 100644
--- a/aegisub/src/video_provider_ffmpegsource.cpp
+++ b/aegisub/src/video_provider_ffmpegsource.cpp
@@ -137,7 +137,10 @@ void FFmpegSourceVideoProvider::LoadVideo(Aegisub::String filename, double fps)
 	}
 
 	// update access time of index file so it won't get cleaned away
-	wxFileName(CacheName).Touch();
+	if (!wxFileName(CacheName).Touch()) {
+		// warn user?
+		// FIND OUT WHY IT'S POPPING UP ERROR MESSAGES HERE
+	}
 
 	// we have now read the index and may proceed with cleaning the index cache
 	if (!CleanCache()) {