Normally a file transfer failure is the result of blocked port(s) at the Senders End or it could be you ignore the file type the person was trying to send, if so a quick temporary remedy is to type /dcc ignore off it would usually by default turn itself back on in 3 minutes, if this was/is the case you can make permanent changes in ALT + O > DCC > Ignore in mIRC6.16
mIRC will not by default restrict you to one receive at a time
ScoT
