i am importing huge files and have no problem at all. so it might be another thing.

(in addition to other stuff mentioned above)

do you have the latest update of vue?
do you know that windows 32bit only allows 1GB RAM per application? (regardless of the 4GB you have)
there is a so called 3GB switch where windows allows 3GB per application. you have to google up how to set this but once you have this on you should have less problems caused by low memory.

if possible also try exporting through other file formats for importing. i found that not all are handled the same way in vue.

hope this helps a little