Welcome!

Yuri, I am still seeing some occasional crashes, probably due to impossible combinations of folders within folders. Each crash consists of a flashing white screen, with TLB in the upper left corner and a crazy cursor. To regain control I must do a hard shutdown and reboot.

Now that I know more, should I completely uninstall TLB and start fresh?

To start fresh you don't need to reinstall TLB. There are two ways:
1) Open the toolbar folder and delete all files including hidden.
The toolbar folder can be opened when you right-click the empty space of toolbar and select "Open". Or by default this folder is %APPDATA%\Microsoft\Internet Explorer\Quick Launch

Note you need to close TLB before deleting files.

2) Close TLB. Open TLB but hold down CTRL+SHIFT when click "True launch Bar..." from the toolbars menu. TLB will show the select toolbar dialog box where you can select the empty folder for your toolbar.

TLB store all settings inside the toolbar folder, so selecting the empty folder is beginning from the start

I'll answer on your other post in bugs soon.