If TC-11 2.0 is crashing at launch, it is due to a bug in the 1.0 -> 2.0 patch conversion. Please follow these steps for a workaround:

1. Connect your iPad to the computer you use to sync.
2. Open iTunes >> Your iPad >> Apps >> File Sharing >> TC-11.
3. Move your custom patches (.tcp) out of the TC-11 Documents directory and store them on your computer.
4. Launch TC-11.

The bug has been fixed, and an update has been submitted for approval. Once the update is available, you can re-add your 1.0 patches and TC-11 will convert them to 2.0 at launch.