Problem

I suddenly encounter strange problems, mistakes and behaviors in OpenBuildings Designer. For example:

• When I open a DGN file for the first time after starting OpenBuildings Designer, I want the view windows to appear as I left them when I closed the file. I checked Save settings at output, but windows are automatically reorganized.
• Sometimes I encounter somewhat random glitchy behavior during the work, such as unpreserved tool parameters or graphics that temporarily display incorrectly.
• OpenBuildings Designer suddenly starts to generate errors when j

Solution

For a strange intermittent behavior, we recommend you first try to regenerate your local prefs files:

1. Close OpenBuildings Designer.
2. Use Windows Explorer to access your prefs folder, which is by default in C:Usersvotre.nameAppDataLocalBentleyOpenBuildingsDesigner10.0.0xxxxxxxxx.
   This location is defined by the configuration variable TFDIR_PREFS.
3. You can also check the location of preferences by choosing File > Settings > Settings > About the configuration in CONNECT Edition or Workspace > About Workspace in V8i.
4. Rename the prefs folder as "prefs123" or similar.
5. Restart OpenBuildings Designer.

This will generate a new set of preference files that can help solve these random problems.