Error when closing SQL Navigator: “not enough space to accomplish this operation” (4226411)

Following error occurs when closing SQL Navigator:
“not enough space to accomplish this operation”

WORKAROUND:
1. Close SQL Nav
2. Select Start | Run and enter/run REGEDIT
3. Navigate to HKEY_CURRENT_USER\Software\Quest Software
4. Rename "SQL Navigator 6.5.0" node to "SQL Navigator 6.5.0 OLD"
5. Reopen SQL Nav and if prompted do not migrate legacy settings

*Note with above change all user settings and connections will be reverted to default

Issue scheduled to be addressed in version 6.6.