I am often given AI files (Adobe Illustrator) for the purpose of extracting assets for my flash projects. Over the past few months, I’ve been receiving a lot of files having been giving me this same issue.
Basically, any time you switch focus from Illustrator to any other application, such as flash – and then switch back to Illustrator, the program will freeze up for a good 20 to 30 seconds before allowing me to manipulate any objects. I did a few troubleshooting steps, such as starting a blank document and reproducing my steps. The problem would never reproduce with a blank file, or any files that I made. So obviously, in my mind it had to be a problem with the file.
It was time to upgrade, so I just went ahead and upgraded my adobe suite to CC (Creative Cloud). So I proceeded to open the files in Ilustrator CC and the same problem occurred.
So here is the thing – The client had told me to ignore any missing linked files in the illustrator document because they were remnants from reference material. So just for fun, I found the layers with the missing linked images, and deleted them.
Just like magic, the problem was gone. Lesson learned! Just thought I’d pass that on.