I am working with Epidata Entry Client (v1.1.1.1). I created a project using an imported Stata file and for two days have happily been editing and adding data. Of course, each case was saved when moving to another one, and the project was saved at intervals after roughly 10 cases had been worked on.

Then, after a working session of some 6-8 hours without saving the project, the program is suddenly refusing to save the project. No errors are reported when saving cases, but I get this message every time I try to save the project:

Unable to save project to: [path and file name] Error message: Unable to create file "[path and file name]"

The path and file name are both correct. So why am I suddenly encountering this inability to save the project with the same name that it was created with? I can continue to work on the project, but I can't save my work.

Of course, Entry Client does not have a "Save as" function, so trying a different name is not an option.

Any suggestions?