try removing all your mods/hacks and then do it - i had a similar problem a few months back when trying to install stuff and it was the mods interfering with the installer. you can put them back again when done

I've ruled out the gardening idea as it happened again to me without touching any gardening interactions.

I've done a bit more play testing with this and I think its something to do with the lots themselves as it only seems to happen on specific lots ie goth house, art gallery. deleting the lots and replacing them with lots exported from a clean neighbourhood didn't seem to work so I deleted the lots, saved the game with the lots empty then added the clean replacement lots back in. This so far seems to have fixed the problem.

I've only recently had this problem which has occurred at almost the same time as I decided to play a farmer sim. I'm wondering whether this has anything to do with the memory leak problems that were supposedly fixed in patch 1.3.

that problem occurred when the fertilize interaction was used.

I tested my game without using any of the gardening interactions and the problem didn't re-occur. Also I had all the settings maxed out so I don't think its a general memory issue.

I'm just wondering if anyone who has had the problem had been using any of the gardening interactions when it first happened