After Effects warning: Undo group mismatch, will attempt to fix. Have reinstalled After Effects a number of times, and now have a new computer. IT support at work are baffled. This happens as a result of not being able to import files in the normal way (File> Import, double click the media browser, right click on media browser and import) This is not a continuous issue, when I first open AE, I am able to work as normal, import at normal. Only after importing a few different comps does this begin to happen. I am suddenly unable to import any type of file or media. It does not respond or react to opening a box to even begin browsing for what I wish to import. The only other way to import would be to drag and drop my desired media into the project. As a result, when attempting to edit key frames for that imported item, this error (as before) will appear, and all imported media will disappear. Any idea how on earth to fix this issue, or what else I can do? The work around I have at the moment, is to close AE and reopen it, for it to work for about 30 mins before stopping again. it also quite often crashes when this pop up appears. 
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AE CC, Version: 13.2.0.49 As far as concerned, this is completely up to date.
Mac OSX Yosemite version 10.10.2
please see attached screen shots for the error messages in full.
exact sequence varies for this issue to happen. import failure through typical steps (file>import, double click, right click) will only import via drag and drop.
when dragging and dropping media to the project, and is adjusted (scale, position, key frames) the error message(s) will come up, and the dragged and dropped media disappears, all changes are undone.
Never used to have a problem before we updated to the cloud. not just me that is affected, another colleague is too.
no thid party hardware.
source footage varies from jpegs, to png's.
quicktime version 10.4
also running adobe premiere pro with no known issues.
no third party effects installed
do not know if using Open GL, I cannot see it in preferences, preview where it normally is.
no problems with output, issues with work flow.
specs of my machine are attached in screen shot. I have recently changed computers, the issue has been present on both. 
qben9354 wrote:
...do you know a way to revert back to the timeline controls of 2014? Mostly in regards to pressing spacebar to play, and then spacebar again to pause. Currently it seems like hitting spacebar again to pause doesnt work and it takes 2 or 3 presses to get the scrubber to stop playing.
That's pretty annoying, isn't it? I'll try to explain what it's doing so it might make more sense. Pressing spacebar starts a preview. That's fine and dandy. However, if the timeline isn't fully cached when you press spacebar again, it just starts real-time previewing what has been cached. Thus, you often have to press it multiple times before it stops.
Like I said, annoying.
That'll be fixed in next months big update. With all the bugs being fixed and this change to the previews, next month's update could make CC 2015 useable for most folks who aren't using it in production yet. We'll have to wait and see. 
Here's more info on next month's update: What’s new and changed in the upcoming update to After Effects CC 2015
qben9354 wrote:
Is there any way to only preview with the numpad and not spacebar?
I think so. It depends on what you're asking - I'm not quite sure what you meant. Here's a page on how Previewing currently works: all about previews in After Effects CC 2015 (13.5) |
That explains it in far more detail than I could and it might help alleviate some of your issues until the update comes out next month.
Typically this can happen in any comp. I do not use any plug-in's. I use solids and masks to make simple animated charts, statistics and name straps. This error appears when altering key frames after importing an image. I have added a screen shot of a typical project. I hope this helps.
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