
Press “Windows + R” at the same time, type “regedit” in the pop-out dialogue and press “Enter” to open Registry Editor.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersionģ. Expand the key and look for “RunOnce” key.

If it does not exist, you can first create one: click the “CurrentVersion” key and choose “New > Key” from the drop-down menu, and name the new key as “RunOnce”. Now, please navigate to “ HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion” in the left panel and check if the RunOnce key has successfully been created. If not, repeat the above steps to recreate it. After that, you can close Registry Editor and restart Windows to check whether the error is fixed. IMPORTANTCE: since making some changes to the current registry condition might cause risks, you can create an exact backup in advance.ġ. In the registry editor window, click “File”> “Export” to export your registry.Ģ. Now enter the file name for your backup, and select “All” in “Export range” section. Click the “Save” button to export your registry. If “The system cannot find the file specified” error is caused by potential disk errors, you can run chkdsk command to check and repair errors.ġ. Click Start button, input “cmd” in the search box and press Enter, right-click the Command Prompt icon and choose “Run as administrator”.Ģ. In the Command Prompt window, type command “ chkdsk g: /f /r /x” and press Enter in order to check and fix possible errors. Replace “g” with the appropriate letter that matches your partition. #Mania mod manager unhandled exception code.#Mania mod manager unhandled exception software.#Mania mod manager unhandled exception install.
