Select Source File window appears when debugging with XDebug

[ian]

When I try to debug, when I hit a breakpoint, it asks me for a path to the source file. This did not occur on earlier revisions.

To reproduce:
Using either local or remote debugging using XDebug, a window pops up titled:
'Select Source File' whenever control passes to a new file. In the debug control list, it specifies the path: i.e. Thread[1] file:/var/www/j15debug/libraries/joomla/session/session.php::JSession->get, but I am still asked to select that file from the list.

I'm not certain whether each file only has to be specified once.

It only seems to happen if I have more than one file in my project that has the same name - i.e. it can't tell which session.php to use, for example.

[incastrix]

this is a mappath issue.