Sometimes when you minimize graphedit, windows doesn't return and will stay as small as possible. Closing/restarting graph edit.exe won't fix this. There are two possible solutions.
- Right click graph edit window in task bar and select maximize window
- If this doesn't work try the solution below.
***Backup the registry before making any changes***
- Open Registry
- Delete the registry value [HKCU\Software\Microsoft\Shared Tools\Graphedit]"Settings"
- Run graphedit
Volicon Observer GraphEdit Window Missing