To deploy XLL Host on a target machine, do the following:
Alternatively, use a setup script or package.REGSVR32 pslxld01.dll
If for some reason you choose not to install xlcall32.dll inthe same directory as pslxld01.dll, then should ensure that the optional argument xlcall32 is populated whenever XllDriver.Initialize is called.
For more information on deployment of XLLs to target machines, see Deploying wrapper libraries.