If you see an error report dialog that includes the following error message at project/edf export on Windows, it might be because zip.exe file under C:/Program Files/Exploratory/external/ is missing.
'zip' is not recognized as an internal or external command, operable program or batch file.
This might be fixed by reinstalling Exploratory. (Reinstallation of Exploratory software does not remove your project.)
Exploratory installer can be downloaded from the usual download site.
Let us know in case it does not resolve the issue.