[Lazarus] Debugging Lazarus in Lazarus - debugger error

[Lubos Pintes]

Hi,
Just tried the following:
Opened <lazarus>\ide\lazarus.lpi and then pressed F7.
The Assembler window appeared and after next F7 press, the following 
error appeared (copy of window text follows)

Debugger Error
The debugger encountered an error when trying to run/step the application:
Cannot find bounds of current function
Press "Ok" to continue debugging (paused), and correct the problem, or 
choose an alternative run command.
Press "Stop" to end the debug session.

Pressing OK doesn't help.
I am using the latest SVN, fresh build. OS is win 7 pro 64 bit.