[Wine] DLL not found

[eagleonorth]

I am testing a Norwegian financial and invoicing software with Wine 1.3.

The app is called "Matrix Økonomi" (www.matrix.no)

Most things seems to work fine, but PDF export is not working. The app says ".dll not found". 

I have checked with the publisher and they say that the DLL that they use for generating PDF's is called "DPDF_Gen.dll". 

I have confirmed that this file do exist in 

.wine > drive_c > Programfiler > Matrix Rs

Thanks for any hints!