Tarik,
After the private mail you sent me I did some test.
A very useful tool to see what/where file an application wants to open
is FileMon
http://technet.microsoft.com/en-us/sysinternals/bb896642.aspx
From Visual Studio, I saw tessnet2 (I mean tesseract C++ code from
tessnet2) wrote a log in my Visual Studio
commont7/IDE directory containing
Unable to load unicharset file C:/Program Files/Common Files/Microsoft
Shared/DevServer/9.0/tessdata/eng.unicharset
When hosted in IIS the directory is
c:/windows/system32/inetsrv/tessdata/
Rémi