I'm also having the same problem with Brandon.

Have tried this:

Can you try double click this ircp file? or open speedgrade then import the ircp via open dialog/desktop ?

But still getting the same crashes. So, I experimented on it for a little bit:

If I move the ircp and media files so SpeedGrade can't find them when it loads, then I can open Speedgrade just fine. Trying to open the individual .dpx file via the browser thingy on speedgrade will immediately cause the same crash. If I move the ircp file somewhere else, leaving the media file alone, then open the ircp file, SpeedGrade will load up the timeline just fine, although it won't load the video (since it can't find the dpx, obviously) This isolates the problem to loading .dpx files.

SO, I tried loading the dpx file on premiere and it opens up just fine. Meaning I have the codec installed properly, or at least, premiere can read it.

SO, I think there's something wrong with the way dpx are loaded in speedgrade.

Any ideas?

Same problem, though I'm on Mac 10.6.8.  Orginal CS6 Speedgrade install works fine, but if you do the update, it crashes every time you open it.

Hi I am having the same problem. A fresh install of Sg from the Creative Cloud works (except that the export button remains gray). After updating Sg it crashes during its startup screen.

... I've just done a test using my MacBookPro 2.4 GHz Core i7, 8 GB 1333 MHz RAM Mac OS 10.7.5. Sg works fine.

Unfortunately, I do my editing and Postptoduction on my (old) ProMac 3.1 2x2.66 GHz Quad-Core Intel Xeon, 10 GB 667 MHz RAM ... either there are some fundamental software conflicts, or my work horse has just been officially passed by my pocket pony.

Adobe, are there any known software conflicts that would be causing the odd behavior in Sg?