I think the real problem here is trust. According to the revision number, you made a minor change and all of a sudden it started working.
1.20 -> 1.23 is a small number. If you had changed to 2.00 then people would have expected a large number of changes. That with a free downloadable version to trial would allow those people who were bitten badly by the first version to try and see what its like.The basic problem is this isn't a one horse race. MS had no real competition when they screwed the Windows 2.x release, but even still, there was comment that any version of Windows wont mention 02 in later releases. With CAD packages, a customer who is burnt badly is unlikely to come back. That is why you must be very sure you have a stable version before releasing. If not, you will be excluded until their preference company also does something stupid (like over price themselves)
My two cents + GST
Simon