File name or class name not found

What's this error?

   Microsoft VBScript runtime error '800a01b0' 

   File name or class name not found during
   Automation operation: 'regexp' 

Thanks...

It seems that you have an outdated version of scripting engine which lacks "Regular Expression" object, please install the latest version, the related link is given in requirements section on the product page.

hi .. i have the same error ... :-(

how to install the latest version?

set mObjG = server.CreateObject("efGeneral.valGeneral")
    set mObjC = server.CreateObject("efCif.valCif")

error occur on this line : 
rwStr = mObjG.ComboGen("cmbBranch", "Branch", mCifBranch, "","ALL")

thx before ...