SQLAnywhere 16 .NET provider and cyrillic const in query

[Former Member]

Good day to all! I faced with another problem on SQLAnywhere 16. Query which contains cyrillic constants returns x1Ax1A (Substitute characters) in .NET application using iAnywhere.Data.SQLAnywhere.v4.0 provider. Its .net provider bug?

SELECT 'ТЕКСТ НА РУССКОМ' FROM DBA.address


Result:
xA1xA1xA1xA1xA1 xA1xA1 xA1xA1xA1xA1xA1xA1xA1


Executing this query through Interactive SQL returns what I need:
ТЕКСТ НА РУССКОМ


Environment information:
SQL Anywhere 16.0.0.1915
iAnywhere.Data.SQLAnywhere.v4.0.dll 16.0.0.19154
An important observation: if connect with SQLAnywhere.v4.0.dll 16.0.0.19154 provider to ASA9 server, all works fine but problem xA1xA1xA1xA1xA1 still remains, on the basis of what I expect a problem with the driver.
Any help would be useful! Thnx! 
Sorry for my english!

[Former Member · Accepted solution]

Problem was solved! dbicu16.dll and dbicudt16.dll was missing on client machine!