This question has more than 2k views in just over 15 months. I too am experiencing the
File not Found message and this question describes my problem. I notice that the person who asked this question had a rating of 6, which to me means he was probably new to Texmaker. I have just installed TexMaker on Windows7 and am getting the same error message. I don't think it is too localized and I don't think 2k+ views in 15 months is a small audience. Instead, this is an error message a new user gets.
Since that question is closed. Where on StackExchange should I ask the question: "
I get File not Found error message when using Texmaker?"