When I try to debug a dart application on Linux Mint 17 using Dart Editor 1.8.5.release (STABLE) with Dart SDK version 1.8.5, it shows me the message "Source not Available for ". This occurs for any brake-point set inside a library.
I tested the same in windows and it works correctly.
How can I solve the problem?
Unfortunately, you cannot solve this problem. At least without the choosing the other version of the Dart Editor to use.
This is a bug and other people also have the same problem.