Problem creating an add-on

[Robert1]

Hi. I recently tried to modify for personal use (its Avalanche Press) the gamebox for John Prado's Third Reich to include the Player's Guide. I have been able to get it to work despite going through the support section multiple times. Any help would be greatly appreciated and I am happy to e-mail people the file if they wish to have a look at it. My e-mail is robertware@hotmail.co.uk