Stack Trace on Error?

[address@hidden]

In my current document I', using some functions, that I have created 
"myself" (a lot of help from the list) and I get an error
C:/Users/ame/Documents/Lilipond/PSG/firsttest.ly:5:6: error: not a 
rhythmic event
<e\6
     \pedA a\5 \pedF cis'\4 >2  e'4\4

C:/Users/ame/Documents/Lilipond/PSG/firsttest.ly:5:16: error: not a 
rhythmic event
<e\6 \pedA a\5
               \pedF cis'\4 >2  e'4\4

So I know that the error is in the functions pedA and pedF, but these 
functions just calls the "real" function in which I obviously have some 
error.

Is there someway, some switch, that will give a Stack Trace so I can see 
where the actual error is?

// Anders

--
English isn't my first language.
So any error or strangeness is due to the translation.
Please correct my English so that I may become better.