Be more specific about what you are doing when you "drag it down...or across." Is the video clip being dragged from the bin (top-left) to the timeline or being dragged on the timeline itself?
A screen capture would help. Upload it to a free server, such as Google Drive of MS OneDrive, get a shareable (public) link, copy the link and post it here or to me in a Private Message via the envelope at the top-right. Someone will check it out. If using Google, be sure that the link isn't "restricted' but can be viewed by anyone.
Suggest that you update to the latest release. For licensed users upgrades are free for up to six months from purchase date. After that, VP will continue to fully function but a fee will be required in order to register the newest. Retain your old install file and registration info.