Canon XF300 files importing without video track

Question

When I import files from my Canon XF300, either directly off the card or from a duplicate of the card on my hard drive, only the audio tracks come in. I've tried doing the import from Media Browser and from the import dialog with the same results for both. The video files work fine in Canon's XF Utility and on the camera itself.
I tested this with another set of videos--some work and some don't. I have no idea what's making one set of files work and others not. I have one older project from when XF300 import did work for me, and one of those files has since changed to just showing audio on its own. What's going on here? I've tried Adobe phone support but it's impossible to get ahold of anyone as the callback system doesn't work properly (calls you back and then puts you on hold for 20+minutes.)
I really need to get thsi working as its for a project and it's frustrating as there are no errors. I've tried re-installing Premiere Pro with no success.

Answer 1

Doesn't look like Beyond Compare has a mac version, so I used Diff to check the differences. The only thing that was different was in the XMP files, which much be something Premiere makes?
Here's the output of diff -rc in one specific folder:
diff -rc /Volumes/Buffy/Video/Havana Garage/HG Havana/CONTENTS/CLIPS001/AA0903/AA0903.XMP /Volumes/Buffy/Video/Havana Garage/CONTENTS/CLIPS001/AA0903/AA0903.XMP
*** /Volumes/Buffy/Video/Havana Garage/HG Havana/CONTENTS/CLIPS001/AA0903/AA0903.XMP          2011-11-03 12:31:37.000000000 -0500
--- /Volumes/Buffy/Video/Havana Garage/CONTENTS/CLIPS001/AA0903/AA0903.XMP          2011-11-03 12:33:46.000000000 -0500
*** 11,38 ****
      xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/"
      xmlns:stEvt="http://ns.adobe.com/xap/1.0/sType/ResourceEvent#"
     dc:identifier="3ACB1848580548008042C20001E00332"
-    dc:format="MPEG2"
     xmpDM:shotName="AA0903"
     xmpDM:videoCompressor="MPEG2"
     xmpDM:videoPixelAspectRatio="1/1"
!    xmpDM:videoFrameRate="23.98p"
!    xmpDM:startTimeScale="24"
!    xmpDM:startTimeSampleSize="1"
     xmpDM:audioCompressor="LPCM"
     xmpDM:audioSampleRate="48000"
     xmpDM:audioChannelType="Stereo"
     xmpDM:fileDataRate="50/8"
     xmpDM:audioSampleType="16Int"
!    xmpDM:videoFieldOrder="Progressive"
     tiff:Make="CANON"
     tiff:Model="XF300"
     aux:SerialNumber="272060000113"
     xmp:CreatorTool="Firmware v1.0.0.0"
!    xmp:CreateDate="2011-10-14T13:33:24-05:00"
!    xmp:MetadataDate="2011-11-03T12:31:37-05:00"
!    xmp:ModifyDate="2011-11-03T12:31:28-05:00"
     crs:WhiteBalance="Custom"
!    xmpMM:InstanceID="xmp.iid:098011740720681180838B2E66616B2A"
     xmpMM:DocumentID="xmp.did:0180117407206811822A8101ABA5B6DD"
     xmpMM:OriginalDocumentID="xmp.did:0180117407206811822A8101ABA5B6DD">
     <dc:title>
--- 11,37 ----
      xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/"
      xmlns:stEvt="http://ns.adobe.com/xap/1.0/sType/ResourceEvent#"
     dc:identifier="3ACB1848580548008042C20001E00332"
     xmpDM:shotName="AA0903"
     xmpDM:videoCompressor="MPEG2"
     xmpDM:videoPixelAspectRatio="1/1"
!    xmpDM:videoFrameRate="23.976024"
!    xmpDM:startTimeScale="24000"
!    xmpDM:startTimeSampleSize="1001"
     xmpDM:audioCompressor="LPCM"
     xmpDM:audioSampleRate="48000"
     xmpDM:audioChannelType="Stereo"
     xmpDM:fileDataRate="50/8"
     xmpDM:audioSampleType="16Int"
!    xmpDM:videoAlphaMode="none"
     tiff:Make="CANON"
     tiff:Model="XF300"
     aux:SerialNumber="272060000113"
     xmp:CreatorTool="Firmware v1.0.0.0"
!    xmp:CreateDate="2011-10-14T13:33:24-5:00"
!    xmp:MetadataDate="2011-11-03T12:33:46-05:00"
!    xmp:ModifyDate="2011-11-02T11:12:38-05:00"
     crs:WhiteBalance="Custom"
!    xmpMM:InstanceID="xmp.iid:D2597C7A0A20681180838B2E66616B2A"
     xmpMM:DocumentID="xmp.did:0180117407206811822A8101ABA5B6DD"
     xmpMM:OriginalDocumentID="xmp.did:0180117407206811822A8101ABA5B6DD">
     <dc:title>
*** 50,58 ****
     <xmpDM:duration
      xmpDM:value="1416"
      xmpDM:scale="1001/24000"/>
-    <xmpDM:altTimecode
-     xmpDM:timeValue="10:08:35:13"
-     xmpDM:timeFormat="23976Timecode"/>
     <xmp:NativeDigests
      xmp:CanonXF="5966D5699601A8DCA8ADC576B5E2D630"/>
     <xmpMM:History>
--- 49,54 ----
*** 70,87 ****
        stEvt:softwareAgent="Adobe Premiere Pro 5.5"
        stEvt:changed="/metadata"/>
       <rdf:li
-       stEvt:action="modified"
-       stEvt:parameters="unknown modifications"/>
-      <rdf:li
-       stEvt:action="saved"
-       stEvt:instanceID="xmp.iid:078011740720681180838B2E66616B2A"
-       stEvt:when="2011-11-03T12:31:28-05:00"
-       stEvt:softwareAgent="Adobe Premiere Pro 5.5"
-       stEvt:changed="/metadata;/content"/>
-      <rdf:li
        stEvt:action="saved"
!       stEvt:instanceID="xmp.iid:098011740720681180838B2E66616B2A"
!       stEvt:when="2011-11-03T12:31:37-05:00"
        stEvt:softwareAgent="Adobe Premiere Pro 5.5"
        stEvt:changed="/metadata"/>
      </rdf:Seq>
--- 66,74 ----
        stEvt:softwareAgent="Adobe Premiere Pro 5.5"
        stEvt:changed="/metadata"/>
       <rdf:li
        stEvt:action="saved"
!       stEvt:instanceID="xmp.iid:D2597C7A0A20681180838B2E66616B2A"
!       stEvt:when="2011-11-03T12:33:46-05:00"
        stEvt:softwareAgent="Adobe Premiere Pro 5.5"
        stEvt:changed="/metadata"/>
      </rdf:Seq>