Hi Shivers,
What is the Exact version of Captivate you are using (Go to Help > About Adobe Captivate) ?
Please try to clear the cache of Captivate ( Go to Edit > Prefrences > General Settings)
See Screenshot
Please clear cache from computer as well..
Go to Start>Run>Type %temp% and then click on ok
Delete all the files from that folder(Some of the files which are in used will not get deleted , Ignore them)
Then try to Run as Admin and check if this works
Thanks and Regards
Himanshu Satija