I have a Flash Professional project (Flash Pro CC) and I am using FlashBuilder 4.7 as my editor. The project was setup by creating the .fla in Flash Pro, then creating a new Flash Professional project in FlashBuilder. Everything seemed to be working fine for a while, errors were being reported correctly, then error reporting in FlashBuilder just stopped working. I would try to run the file from FlashBuilder and the swf file being displayed was blank (just a blank white file). If I then went and tried to publish the file from Flash Pro I would see that there were some compiler errors which were not being reported in FlashBuilder that were causing the "blank" file output.
I was able to succesfully resolve this issue once by removing the project from my project explorer (right-click, then delete) and re-importing it; however, this doesn't seem to be a lasting solution and doesn't always solve the issue. I am running Mac OSX 10.7.5
Can anyone provide any information as to why my error reporting in FlashBuilder just stops working for Flash Pro projects?
I've had similar problems. I've found that the Flash CC file sometimes loses the reference to the document class file and that the source paths in the Actionscript settings are gone when re-opening a file. If I re-enter the document class (and paths) in the Actionscript Settings dialogue it will reconnect with Flash Builder.
Unfortunately, this is client work that cannot be shared publicly. If, however, we could setup a screenshare or some way of "sitting down" together to examine the files, I should be able to work with you to review what I have.