A project add source file from another driver that can't build

[tangxinfa]

I use the "svn build rev 3481 (2007-01-12 21:20:55) gcc 3.4.2 Windows/unicode"

When I build a old project, a message box appeared: can't create object output directory \\obj\Debug\\F\sourcecode\common\
this project locate on e:, I add a source file from f:\sourcecode\common\ to this project.

this problem only appear on the recently version of codeblocks I build from the svn source code.

Thanks.