I was in 1.66 today which is supposedly "stable" and when I went to save a bin it said, "Failed to assemble file ftl.asm, this can potentially cause ECU failure." So I didn't like that and now I don't feel safe with 1.66. What are you guys using?

 

i`ve used .65.66 and 7 without any problem.
try to reinstall it.

 

My experience with that is that you must be opening and saving the .BIN file in the same directory as the Uberdata program and its ASM files...dont know why, but thats what worked for me.

 

I only use 1.66 and have never had a problem with it. I play with 1.7 but have never used it in the car.