Annotative Text is buggy in the 2008 version. Usually, if the text gets "frozen", you can clear it up by typing "AUDIT". Note that you can answer "No" when it asks you to fix errors, and the audit will go much faster.
This problem was fixed in C3D 2009, but as usual, was never fixed in C3D 2008.
I have the same problem with text which isn't annotative in C3D 2012, so I don't think it's totaly fixed yet. Any Idea how to solve the problem so I can edit the text?
A user of mine is experiencing the same problems with C3D 2012. Audit fixes it, but not for long. I've applied the 2012 performance Hot Fix, not that that was supposed to take care of this issue, but just to let people know it's about as up to date as can be.
I'm having the very same problem ... been working and searching on this for two days. This is happening on two computers (not everyone) with same dwg. I've tested same dwg on different computers. I tried Audit and it works once but then goes back to behaving the same. I removed Civil 3D 2011 from computers and did a repair on 2012 (thought that may fix it but to no avail). I put in a Tech Support yesterday and haven't heard back yet. When I do, I'll definitely let you know what's said. This is a headache!
I have had this issue also. Almost every time I need to do anything to text I have to audit it first then regen to see it. This is very aggravating
I did hear from Tech Support...they said this was a known issue and is in their development team and is scheduled for a fix in SP1. A workaround is set the DTEXTED to 1. So far that has seem to work.
Having the same problem, but not only with text editor. Move, copy and other editing commands also will not work when this error occurs. The fix noted about 'dtexted = 1' seams to be working for me as well.