what version of AqBanking is working in GnuCash for Win?

[Johannes Kapune]

Dear all,

on German user list there is a problem with HBCI to Commerzbank.

On some linux installations it is working fine but on Win not, one 
difference is version of AqBanking.

in linux: AqBanking v5.5.1.0stable

gwenhywfar: 4.13.1.0
aqhbci: 5.5.1.0stable
appversion: 5.5

in WIN:  AqBanking v5.4.2.0beta

and in log I can see for Win:
gwenhywfar: 4.2.0.0
aqhbci: 5.0.10.1svn
appversion: 5.0

Is this last used version in GnuCash for Windows?

What version is used in nightly built Windows? If it is a newer one 
where to download?

Thanks in advanced

Johannes