Brawl+ 4.1 used a seperate code to turn sandbag into a dollar bill. Since I can't post links, I can't tell you where it is, but check brawlplus.net. Look in the txt file for 4.1's codeset and take the code.
A simple answer is to just not play on wifi room with computers, really. They suicide on Port Town and act stupid on custom stages too. Meh.
will 4.1 support my music just as well as 5.0? i heard brawl+ in general sux with music so i assume using old versions of gct codes will increase the number of crashes
and the reason why i play with cpus is because my siblings dont play brawl and i cant always invite my friends over to play