The error occurs when TestStand is having trouble accessing the Database activeX server. Here's a couple things to try:
Navigate to Start » National Instruments » TestStand x.x » TestStand Version Selector
. Select the version of TestStand you are trying to use (even if it is the only option) and click Make Active
. This will re-register all the necessary activeX components.
The activeX server for database is stored in the follow location:C:\Program Files (x86)\National Instruments\TestStand 20xx\Components\Models\TestStandModels\Database\DBOptions\TsDBOptions.dll
If the version selector does not fix the issue, you can try following the steps to manually register the server