When I try to attach a file as a reference, the standard file system explorer dialog opens instead of the Select CAD File dialog, so I cannot browse files stored in ProjectWise.
The problem may also occur with File > Open or other tools.
Ensure the custom module for ProjectWise Explorer is installed and the Setup > ProjectWise dialog is configured properly.
If ProjectWise integration is installed and configured properly try the following.
There is logic in the pw.cfg file that sets PW_DISABLE_INTEGRATION if it does not find what it likes. The following procedure resolved the problem for one user.
Install the ProjectWise custom module for ProjectWise Explorer