I get a lock error (error # 10458) when I try and open my project.

  1. What likely happened is the PC or XT crashed and when it did so it left behind a temporary file which is the lock file in this situation.
  2. If you locate your project here: C:/Documents and Settings/All Users/Shared Documents/Noldus/The Observer XT/Projects and then go into your projects own folder
  3.  do you have a ~projectname.vol file? If so delete it and see if you can now open the project.
The Observer XT 6.1, The Observer XT 7.0, The Observer XT 8.0, The Observer XT 9.0