why the f*ck?

why? why the f*ck does this expansion always crap out after a week for me? it works perfectly fine for a week before all the stupid *** errors start showing up, and now today I gotta redownload the whole f*cking thing because its opening up to retail, I tried everything to fix it. and no, its not my computer, every other private server works great for me, except this one. I would definitely pick a diff server provider if I didn't invest so much time in this one already.

If you are using the WoD, you may want to try with the original one. It is known to be more stable.
However, you should pay attention to error logs. It might be crashing because of an addOn or bad game configuration as well as other system stuff (drivers etc.).