I don’t have any ready-made .zip files from before but you can get the code from any release there on github.
However, I’m pretty sure that this is not the reason. We and other labs use Lead-DBS a lot on a daily basis and we don’t get this error. I would have definitely heard of this error if it had to do with the current release.
Also, would really recommend to do a complete clean install, i.e. deleting all Lead-DBS related code (including the .ea_prefs.m file in your windows user home) and then installing freshly either from website or via Github.