Editing Workspace and illegible Fonts

I am currently using FCP 5.1.4 and upon opening it this morning, the entire editing workspace has the same, illegible font (the letter 'A' in a box). Also, when I try and access my user preferences within FCP, it will crash.

Also, when I try and access my user preferences within FCP, it will crash. I have trashed my preferences and repaired permissions, but beyond that, I am clueless on how to resolve this problem.

Here is the crash report (abbreviated version)...

Version: 5.1.4 (5.1.4)

Build Version: 2

Project Name: FCPApp

Source Version: 702211411

PID: 222

Thread: 0

Exception: EXC_BAD_ACCESS (0x0001)

Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000024

Thread 0 Crashed:

0 com.apple.FinalCutPro 0x0014e245 pKGGetCanvasWindow(KGCanvasRec*) + 9

1 com.apple.FinalCutPro 0x000c56f2 InitSliderStuff(KGSliderRecord*, KGSliderType, double, double, long, unsigned char, double, long, char*) + 2178

2 com.apple.FinalCutPro 0x000c5a3a pKGInitSlider(KGViewRecord*, KGSliderRecord*, KGSliderType, char*, KGRect*, double, double, long, unsigned char, double, long, long, char*, char*, unsigned long) + 204

3 com.apple.FinalCutPro 0x000c5b1e pKGNewSlider(KGViewRecord*, KGSliderType, char*, KGRect*, double, double, long, unsigned char, double, long, long, char*, char*, unsigned long) + 216

4 com.apple.FinalCutPro 0x002820c8 ScrollerInit(KGScrollerRecord*, KGRect*, char*, unsigned long) + 380

5 com.apple.FinalCutPro 0x00282543 pKGScrollerMessage(long, long, KGDictInt*, KGViewRecord*) + 449

6 com.apple.FinalCutPro 0x0026f0b3 ViewGetFromResource(KGFileRec*, long, KGViewRecord**, unsigned char) + 1557

7 com.apple.FinalCutPro 0x0026f1cf pKGViewGetFromResource(KGFileRec*, long, KGViewRecord**) + 27

8 com.apple.FinalCutPro 0x001ebada AudioGroupPreferenceHandler(long, long, KGDictInt*, void*) + 190

9 com.apple.FinalCutPro 0x001d6cde pKGAppPreferenceShow(char*, unsigned char) + 904

10 com.apple.FinalCutPro 0x0018c596 DefaultMenuHandler(long, long, KGDictInt*, void*) + 858

11 com.apple.FinalCutPro 0x0013a1f3 HandleMenuCommand(long, unsigned char, unsigned char, unsigned char, KGErrorCode (*)(long, long, KGDictInt*, void*), void*) + 331

12 com.apple.FinalCutPro 0x0013a3cf HandleCommand(long, unsigned char, unsigned char, unsigned char) + 251

13 com.apple.FinalCutPro 0x003cda98 CommandProcess(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 362

Thanks-