Board Thread:Suggestions and Ideas/@comment-24191375-20140630181109/@comment-5334617-20140630213659

Right... the second program you show has a  instruction in program memory. The  removes everything from program memory, including the , and instead puts "READTEST" in program memory. In READTEST, PTC finds the instruction. What this does is, it tells PTC to scan the current program memory for a  instruction. There is none, so it gives an error.

It's very very doubtful PTC V3 will behave differently in this regard (with the  and   instructions), but it may have other data and file manipulation facilities.