Mike's software fills a niche that I don't think anyone has bothered to compete in. Additionally, I have told Mike more than once that his old software, pre-COW, was a tough act to follow.
I'm taking your word for this, and then this piece of ... is what you present
Make the fixes ... by 2016/12/31 or return my money. My next step is BBB and small claims court.
You clearly have been a long time user. You have benefitted from his initial product or you wouldn't have bought it. He has provided updates as promised. You do not own the software nor have you purchased a license to acquire the rights to the modify the software yourself. You were only granted a right to use it, as-is.
Now you want to get ugly with him, threaten him with a small claim lawsuit as if you are somehow owed something? You may be a good chess player but your interpersonal skills leave a lot to be desired. The best you can hope to achieve is harassment. That doesn't help anyone or anything.
Are there issues that need to be fixed? Yes. No argument. Mike's quality control leaves much to be desired, but he does try to address them as he can. For a one-man programming shop, he has done remarkably well. Normally products of this nature require a team of programmers and business management professionals and that type of overhead drives up the cost. If you take the time to google Mike's business address you'll learn he is operating out of his home, and yet he manages to provide free software updates which no one else can reasonably afford to do.
As far as Quality Control goes, I do wish Mike would focus on correcting the existing issues in his program code before cloning them to another operating system. Copying the existing flaws to another platform simply multiplies the maintenance problems. With that said, fixing little bugs doesn't bring in sales revenue either and it's a tricky balancing act that all business owners need to work out for themselves. With that said, Mike shouldn't simply assume that all his customers are happy simply because they are being complacent.
Does Bogg's issue deserve attention? Yes. Does that mean it's the most important issue? No. It's just the squeaky wheel syndrome.