Thanks to an anonymous comment, I have found out that Adobe has released a hack to fix the “Error opening URL” error in CS5.
It was determined that FileVault was indeed causing this issue. Turning it off was the easy fix, but for those of us who can’t do that, we were stuck without CS5. Adobe didn’t release a patch, but did release a file to replace in the Commons folder. See link for instructions.
Seems to have worked for me, and that makes me somewhat happy.
What an easy fix. Thanks for posting this!
@Justin Putney
Pleasure 🙂
I continue to suffer from the same problem… Flash continues to display the “Error opening URL” message, even after replacing this “fix” file… Filevault is turned OFF so… What is going on??? Payed so much money for CS5 bundle and i’m not tolerating these bugs anymore!
Sounds like it might be another issue then. Filevault is the primary culprit in this case, and if you still get the problem with it off, it might be something else. Have you tried creating a new user and running flash from the new user’s account?