Wait for files hangs if files aren't there

[pclancey]

Part of my build involves waiting for the executables and dlls to appear in an Output directory after code signing. I'm using Wait Until... Files(s) are created or modified, but this step continues to wait even after the files appear.

If I simply stop the script, and re-execute the step, then I get the message:
"All file(s) already exist, continuing without waiting", and the script continues on. This tells me my file list is correct.

I am using v8.6 under Win7, this script was imported from v6.7 (WinXP), where it used to work.

Any ideas?