Windows – How to use ProcMon on Windows XP – Get an error about InitializeSRWLock

Yes, EncodePointer was introduced in Windows XP service pack 2, so it is very likely that the reason the software is not working is that you do not have this installed. However, this doesn't mean you need to hook the computer to the internet.

Instead, use another computer to download service pack 3 and put it on CD or USB stick. Copy it to the hard disk of the target computer, then run it. You probably don't need any of the other updates.

(Note: ignore the bit on the download page that says "This installation package is intended for IT professionals ... please visit Windows Update". In this situation, this package is the simplest way of installing the service pack, even for a single computer, and the process isn't particularly difficult.)

Make sure your Windows XP version is fully patched and updated to Windows XP Service Pack 3.

This:

could not be located in the dynamic link library KERNEL32.dll

Means that the application is not written for whatever version of the operating system (KERNEL32.DLL is a core Windows file) that you have installed. If you know you have the correct major version (i.e., XP, Vista, 7, 8), then this usually indicates that software requires an older or newer minor version (service pack). Tentative research on DecodePointer suggests you need a newer version.