[CWB] %d does not work??

["Gertrud Faaß"]

Dear all,
I am bit confused as students showed me a case this week where %d flag does not seem to work anymore, I could not find the error here.
The problem was raised because Umlaut did not work when used in parameters entered to execute a macro, e.g.

HGC> /testmac3[führen];
CQP Error:
 Macro syntax error.
CQP Error:
 CQP Syntax Error: syntax error, unexpected UNDEFINED_MACRO
 /testmac3[fü <--
Synchronizing to end of line ... 

Any word without Umlaut works with this macro.

I then tried online queries:

[lemma="führen"] = >worked (77,408 results)
[lemma="fuhren" %d]; => worked, but 0 results.
[lemma="f\"uhren]; => worked, but 0 results
"fuhren" %d; by the way only shows "fuhren", though "führen" exists (see above)

We are working on a linux (ubuntu 12) system with CWB 3.0, the shell and the corpus are both utf-8. We are using the syntax described in the CWB online tutorial. 

There seem to be two problems (in case we got the syntax right): first, umlaut cannot be entered with macros, and second, the method using %d or the latex code do not work (dto), anymore(?) .

We'd be very thankful for any hints,

best 
Gertrud