Problem Description

If a drawing will no longer open or experiences frequent crashes and all other solutions have been tried in order to "fix" the file, try merging the bad drawing into a new drawing.

Steps to Resolve

1. Before you do anything, make a backup copy of the bad file.
2. In AECOsim Building Designer (in any working file), go into Workspace - Preferences - Look and Feel and turn off the option to Use Windows File Open Dialogs then Ok.
3. Click File - Save and then File Save Settings to write the modification to the Preferences file
   
4. Select File - Close to go back to the File Open (the old "MicroStation Manager) dialog.  You will now have a File - pull-down menu in the upper left-hand corner
   
5. Click File - New to create a new file of the same type (using the same seed file type).
6. Select the Merge option
7. Merge the bad file into the new file you just created by filling in the fields and following the prompts.  This can take a minute or so depending on how many elements are in the original file.
8. When finished, you will be taken back to the File - Open dialog
9. Open the new file and see if the contents of the old file were merged into the new file and if the new file can now be used.