[TxMt] Error: Document ... not open in application. Can't make file ... into type alias

[Marius Hofert]

Dear Textmate Experts,

I get the following error message on compiling a document called  
mydocumentname.tex:

Document '/Users/myusername/myfolder/mydocumentname.pdf' not open in  
application execution error: Can’t make file "Macintosh  
HD:Users:myusername:Desktop:mydocumentname.pdf" into type alias. (-1700)

"myfolder" actually stands for a path where the document  
mydocumentname.pdf is located. It is unclear to me why the path  
"Macintosh HD:Users:myusername:Desktop:mydocumentname.pdf" appears,  
because the file mydocumentname.pdf is obviously not on the Desktop.  
Maybe understanding this solves the problem. I am also not sure if  
this is a serious problem, the generated .pdf opens in Skim as  
supposed to.

I work with textmate (version 1.5.8 (1505)) on Mac OS X (10.6.1).

Any help is appreciated.

Marius