Curvemeister gives an "Invalid Path" error after clicking the OK button

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Several people have encountered this problem.  It happens if you run Photoshop using a non-adminstrator account that does not have permission to save to the history folder.  The history folder is normally in C:Program FilesCurvemeister.comCurves 2History

If you are familiar with using regedit, you can change this by altering the key named
HKEY_CURRENT_USERSoftwareCurvemeister.comCurves 2Default SettingsHistoryDir to contain the name of a folder that you have permission to modify.  Curvemeister will then save all of your curve files to this folder.

Please post here if you'd like more information on how to use Regedit.