Could not load file or assembly 'IRMDataLoader.exe'

System

Hi,
I have two identical servers(VMs) running Desksite,WorkflowGen and IRMDataLoader. I have this issue on the second server, which is the exact copy of first one,while first one works without any issues with same code.

From my workflow, I call IRMDataLoader through a webservice using .net

System.Diagnostics.Process procDataLoader = new System.Diagnostics.Process();
procDataLoader.StartInfo.FileName = strDLExec;
string strArgs = " -f \"" + strXmlPath + "\"";
strArgs += " -c " + strServer;
strArgs += " -l " + strUser + " -p " + strPassword;
if (strDomain != null)
strArgs += " -d " + strDomain;
strArgs += " -rcu -rsu -ru -rx \"" + strResultsFile + "\"";

procDataLoader.StartInfo.Arguments = strArgs;
procDataLoader.StartInfo.RedirectStandardError = true;
procDataLoader.StartInfo.UseShellExecute = false;
procDataLoader.StartInfo.WorkingDirectory = strDLPath;
procDataLoader.Start();

but i get exception saying that

System.Web.Services.Protocols.SoapException: IRM.CreateNomineeRecord DataLoader Error: Process execution failed - ExitCode(-532459699) Message:
Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly 'IRMDataLoader.exe' or one of its dependencies

I'm just wondering is this a configuration error on the second server.
Thanks
G