any issues with installing OCN4 into SD card? also, even if you do install to SD card, are there any large .dll or any other files installed to main memory that takes up space?
There are no issues with installing OCN4 to the SD card. I have OCN4 installed to my card as well as the maps and it works fine. If I remember correctly all of OCN4 files install to the card.
I also had OCN installed on my SD first. It gave me some weird problems until it finally messed up one dll file, was useless and needed to be reinstalled. I was on my way back home and pretty much relied on OCN - that lead me to put it on MM (as OnCourseNavigator strongly suggests on their site). Ever since, its working fine and I have not had any problems with it. A lot of people have it on SD though and never had a problem either. I guess its up to you really.
I might add that it also works from CF card and built-in storage. I tried it all three locations with no problems on my X50v. I finally settled on a 2 GB CF card, because I wanted all the region and the program on the same card.