OCI.DLL error

My application install Oracle OLEDB and instant Client 11g, with "ODAC 11.2 Release 5 (11.2.0.3.20) with Xcopy Deployment" the connection work well in hundred of installations, except :
On a single machine and only on it, with Win7 32 bit I have a particular problem, when i try to active an ADOconnection Object , an error appear :
"The procedure entry point lxgutf2ucs could not be located in the dynamic link library OCI.DLL"
Any Idea ??
thanks Mirko

I'd guess the wrong OCI.dll is being loaded.
Use Process Explorer from http://sysinternals.com to verify where it's being loaded from. You'll probably see it's not the one you expect.
Once you've verified exactly what OCI.dll is being loaded, you can see the entry points with Dependency Walker from http://dependencywalker.com
Hope it helps
Greg

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