It might be complex - or relatively simple - have you checked simple action suggested in the error msg ?
See here (if you have access)
Explanation
The file SoftwareAG.EntireX.NETWrapper.Runtime.xml is not in the same directory as the file SoftwareAG.EntireX.NETWrapper.Runtime.dll .
Action
Check the bin folder of your EntireX installation and the folder of your client application.|