If Ziggy advise doesn't work, it is because your workspace is corrupted.

It is a good practice to create a new workspace and name it as you please. In your case bases in the adobe preset. Create a second workspace based in your custom one. It is a backup workspace.

If you run into any problem, you could hold F8 key while launching PP9, then restore to factory settings. This action will overwrite your custom workspace. After PP launch correctly, you could switch to the backup workspace, and overwrite later the corrupted one.

Hope it helps.