Things seem fine, although I did sink a Granville freighter in the Hebrides and received no entry in my logbook. I was surfaced and pounding her with the deck gun to finish her off after taking a torpedo; she sank and as I was watching her go under a patrol craft came along. I dove and left the area, but no credit for the sinking.

I am pleased to report that I have successfully concluded my first patrol, with no CTD's though I always get the "SH3 has stopped working" message after exiting the game. I also saved, exited and reloaded several times with no problems. Continuous testing will tell me if this tweak works for me. Fingers crossed...

It seems your wife will need to get used to the sound of explosions coming from your side of the bed again.:D

Aye, there is that possibility again. In any event, I should get my gaming desktop up to scratch again, if only to enjoy the larger display.

I am pleased to report that I have now conducted three career patrols with the 4GB patch installed and have had no CTD's, although one saved game screwed up on loading. I did have multiple saves for the same patrol so I loaded a previous save; all I lost was a few hours of patrol time, during which there was no action, so there was no real loss at all. I make a habit of having five saves per patrol which I cycle through and overwrite from time to time. Before and after any significant game event I save.

Glad to see it's now working on your rig. In the old days I remember it was a common advice not to handle more than 3 saves at any time, although I don't remember quite well the reason for it. I stick to it and can't remember a CTD
either on my XP Pro sytem or on my laptop with W7/64.
A good rule was also to save only surfaced or when only your sub is there. (Although I must say on some circumstances I had to save in the middle of a convoy tracking or even submerged in the middle of a destroyer attack and never had any problem reloading... may be I was just lucky...)

I'm glad it's all worked out for you on W7 :DL