Hello folks, I'm trying to run the uCOS_II operating system on an AVR 128. The compiler I use is the IAR embedded workbench. I compiled all source files successfully. Linking fails because of the error "Error(e62) File name uCOS_II.r90 used for multiple files. There is a uCOS_II.c and auCOS_II.h file. Can anyone tell me in more detail what this error means and what I can do to prevent it. I'm not a very experienced embedded software guy! Thanks in advance for your help.