I'm trying to upload jpeg attachments, and each time it says it failed. My internet is stable. Any ideas, anyone unable to post photos?

Resize your photos. 1024 pixels on the longest side. The software this forum runs is from the 90s, it can't handle large photo files.

Other option is to host externally such as imgur and embed the photo URL's in your post.

__________________
Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Best to set your camera to small format .