Here’s what my problem was:
I’d insert an image, it would only show the outline in my wysiwyg editor, and show either nothing or a link to a nonexistent image on the page.
Here’s what I did to fix it:
Essentially, follow Otto42’s advice, and read his link above, specifically:
Do you have custom settings on the Settings->Miscellaneous screen? If so, make sure that they are correct. The upload directory must not have a leading slash in front of it (uploads instead of /uploads), and the URL must not have a slash at the end of it (http://example.com/uploads instead of http://example.com/uploads/).
I don’t recall making that specific setting [upload dir], but I DID at one point migrate my entire blog from a subdomain [a test implementation] to the top-level/root/whatever. I changed this setting to the default stated next to it, and it now works as expected.
Hope this helps…
Tatertom