I am playing only offline, so yes, might be that.
I am sure I did install your bike fix because I have all Community pack files in one folder destined to be always ready to install whenever I want in future with step by step instruction how to install it including step with bikes fix.
Triumph day doesn't crush for me.
Okay, so I've checked files and it is veeery weird...
first of all bikes fix is replaced with my edited TDU_Bots.db. because I was editing cars performance BUT it should still have similar data because I applied bike fix to it before.
I have checked your bot fix and indeed it doesn't have this bot line: 1208897332, but for some reason my data had.
When I am applying your bike fix 4 races won't work (game crashes when I am trying to enter the race - Lead soles, A little challenge, Danger at the corner, Only the last will win.
In your bot fix there is 288 bots in total, in my edited TDU_Bots.db. there are 244 because I was editing it in past and I remember I was trying to get rid of this bug which caused crash on 4 races.
I have no idea though how old line appeared in this edited data, I applied bikes fix to it, no crashes are proof of it...I remember I had to delete some bugged cars in order to fix races mentioned above...