Using drive path either local or mapped is intermittent

Howdy,

When calling Webhelp from a C++ application running on windows 7 using a drive path works sometimes and sometimes not.

When using a web server it works rock solid.

Here's the samples;

CString s_help_server = "file:///z:/webhelp/wlib9_2hlp.htm>Window"; //mapped drive file based intermittent

CString s_help_server = "c:/inetpub/wwwroot/webhelp/wlib9_2hlp.htm>Window"; //file based intermittent

CString s_help_server = "http://TANK_2005/webhelp/wlib9_2hlp.htm>Window"; //web based solid

CString s_help_server = "http://localhost/webhelp/wlib9_2hlp.htm>Window"; //web based solid local computer

We really would like it to work with a mapped drive solidly,

We updated to RH11 and also are using the CSH_API that came with that.

Appreciate any help or insights.

Thanks,

Jim