I know the solution to your problem... however it simply creates another problem.
When you unzipped the patch did you check the zip documentation button in the unzip process. If you did you would see some instructions. What you have to do is reinstall worms by clicking custom install and unchecking the sound bank options. Then apply the official v1.05 patch at worms2.com.
Then of course you apply the crack. The only problem is that it says in the instructions to copy the data dirctory from the worms2 cd onto your harddisk. Whats wrong with that you ask? Well there is already a data dirctory in your hardrive's worms2 directory! So what are you supposed to do overwrite? I doubt it.
I hope I helped you out a little bit, and got you a bit further. I have emailed shadow runner (creator of the crack) for further instruction and I should have a solution soon. Then I'll help you out. All I ask in return is for you to check me diablo2 patchs post... and try and find some help for me!
Seeya soon.