[overgard]

There wasn't a 1.5, so you're probably thinking 1.1 or 2.0. As far as I know it's been pretty good with backwards compatibility though. I used to do a lot of.net coding, and the only time I've seen compatibility issues upgrading was with beta versions (and even then, I only saw a small handful).

[jonathanoliver]

One really big advantage I saw of running .NET was that the upgrade path from 1.0 -> 1.1 -> 2.0 -> 3.0/3.5 ->4.0, etc., was quite painless. Other than having to purchase a new copy of VS each upgrade, the tech side was really easy. This is unlike the Python 2.x to 3 migration which continues to hurt.

[icantthinkofone]

I don't remember the version numbers, and I had gotten it wrong once before when I posted about it, but compatibility was the issue now that you mentioned it. But I guess Microsoft told people that didn't happen and I must be a liar and hence all the downvotes.