Dimension will not open on MacPro

Dimension will not open on my MacPro5,1. The splash screen is incomplete; the 'Open' and 'New' buttons are blank. I have to force quite to close the app. There are no error messages or requests to report to Adobe. The splash screen just freezes. These apps run as expected:

InDesign
XD
Photoshop
Illustrator
After Effect
Bridge (a little buggy; will freeze sometimes)

Acrobat

Adobe Animate

I have tried loading the oldest version and the newest version.

I have 2GB of vRAM and 64 GB of Ram. Here are my specs:

Mac Pro (Early 2009)

Hardware Overview:

Model Name: Mac Pro
Model Identifier: MacPro5,1
Processor Name: 6-Core Intel Xeon
Processor Speed: 3.33 GHz
Number of Processors: 1
Total Number of Cores: 6
L2 Cache (per Core): 256 KB
L3 Cache: 12 MB
Hyper-Threading Technology: Enabled
Memory: 64 GB
Boot ROM Version: 138.0.0.0.0
SMC Version (system): 1.39f5
SMC Version (processor tray): 1.39f5
Serial Number (system): H09331RD4PD
Serial Number (processor tray): J50030180BY0A
Hardware UUID: 8FCBB874-26B8-578A-9F91-3318F18C2694

Graphic Card

Chipset Model: NVIDIA GeForce GTX 680
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 2 GB
Vendor: NVIDIA (0x10de)
Device ID: 0x1180
Revision ID: 0x00a2
ROM Revision: 3731
Metal: Supported, feature set macOS GPUFamily1 v4