Not new but still a problem, AM error Options

[prr4ever]

As has been discused here before I can not get AM to open on any activities. I simply get the "input past end of file when loading". I can generate and run an activity with AG but when I wish to use AM to change out rolling stock I get the above error. At present I have templates on three routes which AG has generated activities for and which run fine. This is getting very frustrating....I see others create folders outside of Program Files. Due to the number of utilities I have for MSTS I do not wish to change the path on all these things nor install MSTS on another place in the HD. I am wondering if Steve might be able to somehow program out this apparent bug when using Vista and Win 7? I do not say it is a bug in his program, it seems that the latest MS OS's simply work differently. As has been stated for example the programs always default to read only. Apparently AM is seeing something it does not like. I have version 1.6.2 installed. Is there some fix that can be done without having to edit my hard drive as a work around? I can edit the consists with CB, RR but one of the reasons for purchasing AM was to do this all easily with no fooling around. I spend more time troubleshooting than running MSTS. At this point AM is of no use because it simply will not load.

SYSTEM SPECS
Dell Studio XPS 9100
INTEL I7-920 PROCESSOR
WINDOWS 7 HOME PREMIUM 64 BIT
12 GB TRI CHANNEL DDR3 SDRAM AT 1333 MHZ
ATI RADEON HD5670 1GB GDDR5
1 TB 7200 SATA 3.9 GBS 16 MB CACHE
CREATIVE SOUNDBLASTER X-FI

Dave K.