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*Filed on behalf of a user*
The project where this is occurring has about 30 assemblies, most of them PCL. The solution also includes a few iOS class libraries subprojects. The build process involves external tools to add metadata and assembly signing information.
Debugging the subprojects is often very problematic due to some breakpoints being ignored and some being associated with a wrong source file/location. Some files in a specific project can be debugged perfectly while others are impossible to debug (with Visual Studio complaining that no symbols have been loaded for that file) unless you move them to the main application project. It has also been noted that that not only several breakpoints were ignored or pointing to wrong files, but also a few of them referring to the correct files were off by several lines, resulting in VS hitting a breakpoint and then showing empty or comment lines as the current program step (but the local variables inspector was
consistent with the correct program status).
After managing to remove some of the external tool dependencies from the project to test on the Mac Build Host, the issue doesn't seem to occur there. However, testing on a different Windows machine has resulted in the same issue.
Microsoft Visual Studio Professional 2013
Version 12.0.30110.00 Update 1
Microsoft .NET Framework
Installed Version: Professional
Xamarin.Android 4.12.02001 (a1e3982a)
Xamarin.iOS 1.10.47 (3d6a125d)
On the Mac Build Host:
=== Xamarin Studio ===
Version 4.2.3 (build 60)
Runtime: Mono 3.2.6 ((no/9b58377)
GTK+ 2.24.23 theme: Raleigh
Package version: 302060000
=== Apple Developer Tools ===
Xcode 5.1 (5084)
=== Xamarin.iOS ===
Version: 126.96.36.199 (Business Edition)
Build date: 2014-10-03 18:02:26-0400
Mac OS X 10.8.5
*** This bug has been marked as a duplicate of bug 16916 ***