4) In the Script Manager window that opens, you should be able to see the jobs that are stuck running listed. Right click on them and select Operations | Cancel Script.
SUGGESTION #3:
If it looks like the job is not actually running any longer, but the job still shows that it is, follow the instructions in the attached document to change the status of the "running" job.
STATUS:
This issue is fixed in Toad Intelligence Central 5.0. This version can be downloaded from the downloads section of our website, which you can access by clicking here.