Getting FMCore error 50335758 when opening Suitcase Fusion for Mac

Affected versions

This article applies to Suitcase Fusion for Mac versions 19 (Suitcase Fusion 8) through 22.

Symptoms

When you open Suitcase Fusion for Mac you get an error dialog; clicking OK quits the application.

Solution

Try these troubleshooting steps in order; if you continue to have problems, you can submit a support request and Technical Support can help you.

Letting the type core start before opening Suitcase Fusion

The type core (the background process in Suitcase Fusion that activates and deactivates fonts) may not be started completely when Suitcase Fusion tries to connect, so it can't respond properly. Close Suitcase Fusion, wait 5 to 10 seconds, and open it again.

Removing Suitcase Fusion as a login item

If you set Suitcase Fusion as a login item in macOS, it may open before the type core has started completely. There's no way to set login items to start in a specific order; remove Suitcase as a login item and open it after you've logged in to macOS.

1. Control-click on the Suitcase Fusion icon in the Dock
2. Uncheck Options > Open at Login

Reopening windows when logging back in

Recent versions of macOS will ask if you want to reopen windows when restarting your Mac. This works in a manner similar to a login item; when restarting your Mac, uncheck "Reopen windows when logging back in" before clicking Restart.

Removing outdated or damaged temporary files

Sometimes, Suitcase Fusion can't find the type core process because of outdated or damaged session information. In these cases, waiting before trying to open Suitcase Fusion doesn't address the issue.

1. In the Finder, select the Go menu and hold the Option key down; macOS adds a Library menu option
2. Select Library
   
3. In the Library folder, open the Extensis folder and drag the com.extensis.FMCore-LaunchInfo.conf file to the Trash
4. In the Finder, choose Go > Go to Folder...
5. For "Go to the folder:" enter ~/.Extensis and click Go
   
6. Drag the FMCore folder to the Trash

Repairing a damaged or incomplete hosts file

An incomplete or damaged hosts file will cause Suitcase Fusion to be unable to find a running type core process. For more information about fixing the hosts file, go to Getting FMCore error 67112974 when opening Suitcase Fusion for Mac.