Final Cut X Keeps Crashing with Brand New iMac

Question

I have a brand new iMac (3.2GHz Quad-core Intel i5, 8GB SDRAM, 1TB ATA, 1GB GGDR5) and have done almost nothing on it before downloading the trial version of Final Cut Pro X. I was used to Final Cut 7 and wanted to try out X before purchasing.
I have one project and one event in Final Cut X, it's only a 4 minute video of mostly images, some video and two audio tracks. Every time I try and add any effect like a simple crop/Ken Burns or cross disolve to one of the pictures, Final Cut crashes.
Most of the stuff on here says to delete your preferences or repair disk permissions. I have repaired disk permissions and it still crashes. And as far as preferences, it says to use an app from Digital Rebellion to delete any preferences but I don't think I even have any to delete. I went to system folder -> Library -> Preferences and looked for any FinalCut.plist files to delete and there are none.
I'm wondering if certain photos I'm using are corrupted, but it would appear they all are then. I imported them from a file, would it help to import them from iPhoto? Is there something else I could do to fix those photo files? Or anything else I could try to get Final Cut from crashing?

Answer 1

Thanks for your reply Russ. I'm not sure what you mean by Preference Manager. Am I looking in the correct place for preference files? (Users > Library > Preferences)
Are you saying that even though I may not find them in the Prefereces Folder, an app like Digital Rebellion would help me find them?
I'll try testing a new project but the problem is I can't isolate the problem clip because it seems to be crashing anytime I try and add effects to any photo. Do you know of an app that I could run photos through to "uncorrupt" them?
And when you say create a new user account, you mean at the system level of the computer?