Why has my Sonar Professional Start Screen been hijacked?

OK, here is what is happening. By default, the Command Center updates the version of SONAR based on the OS. This means you have been updating the 64bit version of SONAR. In this case, the update indicators only apply to the 64bit SONAR.  IOW, the version of SONAR you are actually using has never been updated. To update the 32bit version of SONAR from the Command Center

• run the Command Center
• click the Gear in the upper right to access the Setup screen
• check the "Verbose Install" option
• click Save

Now when you run the SONAR installers you will have all the prompts as if you ran the installers at the command line. One of the prompts is the 32/64 option.
 
It is possible to run the installers directly from the Command Center download area and forget about the Command Center. By default the path is "C:\ProgramData\Cakewalk\Command Center\Downloads." The actual path is in the Paths tab in the Command Center setup screen. This will show all the prompts too (regardless of the Command Center settings).
 
You will need to re-run the installers to get the 32bit update. All updates are cumulative so you will only need to run the last the most recent version of each installer.
 
If you want to work the crash issue, create a separate thread.