FCPX hangs on loading event in boot up, but when it does boot it runs very slowly.

Question

I'm having a problem with FCP 10.0.9
When I try to open the program it gets hung up on the opening logo at loading event. I get a message that FCP is not responding in the force quit menu,  but after around 6 hours FCPX opens up, but runs very slowly. I can see all of my projects and everything appears to be intact.
I'd like for FCPX to run smoothly again so I am looking for advice on how to fix it.
Here is some pertinent information.
I'm working on an 2.93 GHz intel core 7 iMac / 16GB memory / ATI Radeon HD 5750 1024 MB / OS 10.7.5
Everything is on an external 12tb Raid drive that has 5.7 TB free and is connected via Firewire 800.
The footage has been going into FCP is Arri Alexa footage that has been transcoded using Devinci resolve and proxies were created for all the footage within fcp.
My event folder is around 600 gb and the transcoded footage that has been imported into FCP is around 6TB
I've been working for about 3 weeks and have everything broken into 4 projects within one event and everything was working smoothly until yesterday.
I have no compound clips, but all of my imported footage has been synced, multicam-ed and organized by keyword collections.
I've tried loading the even backup to no avail (and foolishly I did not have backups stored anywhere else)
I've tried trashing preferences.
I've tried reinstalling the program.
I've tried hiding events and projects with Event Manager X.
I've tried running diagnostics using the digital rebellion pro maintenance tools Corrupt Clip Finder, Project repair, and Quick Fix but everything came back clean.
One person at Apple technical support suggested I move the footage out of my event folder In pieces to see if there was a corrupt clip. First I removed the proxies and then the original media and then everything else (including all render data) until the only thing in the even folder was the event itself, but still FCP hung up on boot up.
Another apple technical support person suggested I should have optimized my media (which I did not do) but after getting FCP to boot up I let it optimize all my media overnight and this has not had any significant effect.
My console displays lots of error messages end with "Too many SQL Variables"
Another error message I am getting in console is: 
Class CMIOGraphService is implemented in both /System/Library/Frameworks/CoreMediaIO.framework/Versions/A/CoreMediaIO and /Applications/Final Cut Pro.app/Contents/Frameworks/CoreMediaLion/CoreMediaIO.framework/Versions/Curren t/CoreMediaIO. One of the two will be used. Which one is undefined.
When I hide the event but keep the projects in their proper place FCP boots up quickly and my projects are all there but none of the footage appears since it is all within my event.
One thing I am reluctant to try but may end up doing if I cannot find the correct answer from this internet community is Export and XML and use Xto7 to try to open it up in FCP7 and finish the project there. This feels like something that is going to cause me problems down the road, but I'm unsure.
As is almost always the case, I'm under an impossibly tight deadline so any advice would be much appreciated.
Thanks!
Brody

Answer 1

Quite the same problem here: FCP X (10.0.9) crashed while quitting, now it's always hanging up (opening logo freezes while displaying "loading .... event"). The Console says: "SQLite error code:1, 'too many SQL variables'".
The difference maybe is that my event isn't that big. 350 GB, including the original and transcoded media. The fcpevent file itself is about 340 MB. Unfortunately (my fault!) I didn't backup any of the .fcpevent files.
Is there any possibility to repair the .fcpevent file? I tested the repair tool by digital rebellion, but still no success. Are there any other ideas?
Thanks!
Ronja