So I imported a .mov video into Camtasia and it worked fine but the moment I tried playing the video with it on the timeline it freezes and crashes. It keeps doing this every time I try and I can't use anything other than .mov because the other program I'm working in only exports in .mov files
In order for .mov files to play in Camtasia, you need to have the QuickTime Codecs for 7.7.9. It is not suggested that you actually install the QuicktTme Player as it connects to the internet and is no longer supported by Apple. However, you can download the downloader here: http://downloads.tomsguide.com/QuickTime,0301-31.html
I suggest you download it, but on install only install the "QuickTime Essentials" and not the player, and it should work just fine, and you wont' have to worry about the security issue.