Why are so many having problems with the wallet?
Because in 90% of the cases people are lazy or inpatient. It might take some time for the wallet to sync up after that fork, I had the same problem, couldn't find a block chain for 4 hours after update, left it over night and never had problems since.
If you follow the steps correctly there shouldn't be any problem at all, it is impossible that the same software works for only some of the people.
1. Backup wallet.dat
2. Remove everything from /appdata/klondikecoin EXCEPT wallet.dat
or 2.remove the whole folder BUT BACKUP WALLET.dat
3. download the new wallet and run it.
4. If you removed the whole folder in step 2, close the wallet and replace the "new" wallet.dat with your backup.
5. Run the wallet and wait
6. Keep waiting
7. Go to sleep
8. It should be done in the morning, if not then get back to me.
It really isn't that hard.