If you receive the error, The path is not valid. Check the directory for the database, go through the following steps.
This indicates that the path to your Microvellum data is not correct, and the program cannot access or find the Microvellum Factory.sdf file. To fix this do the following:
Open up the registry and go to this location…
In the application Settings directory, find LastConfig and look to what value it is set to. The Default is Toolbox Imperial or Toolbox Metric.
Depending on what your LastConfig was set to, browse to that location in the Configurations Directory.
In the Configuration, find PathToMicrovellumData . Double click on it to modify it. It should be set to the Microvellum Data folder. The default path is:
Shut down the registry and restart AutoCAD. It should run normally. If it does not, please contact a Microvellum Technical Support Agent.