Thanks for investigating.Yes indeed, it looks like the bug was the incorrect capitalization of "Player_" in the file names included in the 0.4.5.1 update package. I assume that this affects all Linux or Mac users who installed 0.4.5.0 and then updated it to 0.4.5.1.
Solution:Code:cd game/images/scenes/player/ mv player_player_room2_masturbate1_huge.webp Player_player_room2_masturbate1_huge.webp mv player_player_room2_masturbate2_huge.webp Player_player_room2_masturbate2_huge.webp mv player_player_room2_masturbate3_huge.webp Player_player_room2_masturbate3_huge.webp mv player_player_room2_masturbate1.webp Player_player_room2_masturbate1.webp mv player_player_room2_masturbate2.webp Player_player_room2_masturbate2.webp mv player_player_room2_masturbate3.webp Player_player_room2_masturbate3.webp mv player_player_room2_nap.webp Player_player_room2_nap.webp mv player_player_room2_read.webp Player_player_room2_read.webp
The game code uses capitalized "Player_". So probably the ren'py engine will check for those first. The file names are a bit of a mess right now. A mix between capitalized "Player_" and "player_". I never really paid attention to it until now.
I have changed all the files to capital letters now to be consistent.
Since I'm aware of the problem now and as long as image updates have the same capitalization as the original image, it shouldn't happen again in future partial updates.