I have moved the thread as it had nothing to do with the FlashFXP website.
Alright...
Firstly, you should read this thread
http://forum.flashfxp.com/showthread...&threadid=3078
What version of FlashFXP are you running ?
When do you get the error ? Please show us a copy/paste the status log.
If you are a registered user, please enter your FlashFXP ID in your forum profile/control panel. Do not paste it or give it out, though.
You need to give us an idea when you post a problem... remember we are not at your computer, you are.
P.S... FYI Code 150 usually means; File status okay; about to open data connection