Troubles with starting up

I followed every step, but the it doesn't work.
Then I tried delete ms and reinstall.
The patcher showed up and started to patch, but then it says "Base.wz patch file is corrupted. ..."

just try completely removing maple story and downloading version .62 all over again

Hmm , Try clicking on the v62 Maplestory setup , wait for it to load finish and u will see 3 boxes , Repair , Modify & uninstall . After that , click on Repair , It will fix your corrupted wz files .