That is the version I am using, both on the scheduling server and my computer.
I found a workaround - open the test script, copy all lines to the clipboard, and paste into a new test script under a different project. Rather laborious, but dependable. Haven't had a chance to try this but I'm thinking my next step will be to copy the new test script with a different name back into the original project.
This process takes a bit of time through and I have found other test scripts with the same issues. I am hoping there is a simpler way to resolve a problem like this?