Aces of the Deep - AddON/Patch Install

[Linie]

Hej Hej...

I have the CD-Version of AOD...no probs, but i can't install the AddOn/Patch...
I'm using DosBox 0,72...while trying to install (from c or the directory mounted in Dosbox as Floppy) an error occurs alltime...

just the install.bat:

null point assignment

enviroment variable not defined: IDrive C
GOTO...not found: chkdef

(almost ;-) it's not english....)

with direction (install c:\aod)

an installed version of AOD was not found in the specific direction....blabla


Can anybody help me with that or got another idea how to install the AddON/Patch...

i'd really like to play it...(complete)

THX, LInie

Greetings from Sweden!