I have no idea why the system doesn't like the two pics you're referring to...
There's no limit on the number of pics one can reference externally to using the IMG code. There are limits when one uses the Attachment function, but that's not the case here.
I also doubt very much that it has anything to do with the pics being offensive, as there's no automated code to check for that. It would be a manual thing done by moderators who would see the pics, but that's also not the case here as no moderator has touched them.
I suspect it might have something to do with the filename of the image. Can you change the filename on your end where the pics are store and try again in a new post, or even better for me, if you could just email me the external links to those specific links to badger@milsurps.com, I'll check them for you.
There's also a possibility that the two pics are too LARGE in size and the site's import pics function is choking on being able to copy and convert them internally. Again, email them to me (or link to them in an email) and I'll check for you ...
Regards,
Doug
Edit: I received an answer to the query I made to the software developer about this issue:
The hyphen may cause problems with redirects on mod_rewrite, or maybe also with vbSEO which allows a final "-123" as a thread or forum indicator. Images should be excluded though. Depending on the remote server, "-" may have all sorts of problems at their end, last not least an invalid image, which simply will never import because not conforming to the image standards. If it was for example a spoofed image (image is a script), it will not contain some tags in order to identify it self and thus will fail to load. It is a sort of inbuilt antivirus.