Okay , So if i went into window mode and maplestory would keep popping out with a msvcp71 error, well I went to dll-files and my problem still exsited till i found a guide.
Place both msvcp71 and mscvr71.dll into sysWOW64 if you're 64 bit.
You can download the files from
Here.
I've scanned both files, they're legit, Hope this helps someone with the same problem :]
(click "here" up above ^ , for the link sorry i didn't colour it.)
