a new version was uploaded (for Acknex 7.85.4 AND Acknex 8.20)
the update of the wrapper includes:

- missing event_ property for PANELs was added (thanks at jenGs)
- class methods that return void and aren't static, now return the instance of the object (thanks at Richi007)

here's the link:

AcknexWrapper_2_3_2_FOR_8_20_AND_7_85_4.zip

get the C# wrapper:
for A7.85.4 and A8.30.4, Version 2.3.9
at http://acknexwrapper2.matthias-auer.net/ or visit the thread