After migrating from CA SDM r12.1 to r12.5 CA SDM you may notice that the embedded images in the existing Knowledge documents do not show up. Rather a small Red 'x' mark shows up.
Moreover, if you were to re-insert the image it comes up fine.
In r12.5 CA SDM embedded images ought to carry an Security ID along with them in the associated HTML code. Something like below -
<IMG style="WIDTH: 371px; HEIGHT: 199px" height=754 alt="" hspace=0 src="http://sd-misas02-lab2:8080/CAisd/UploadServlet?ServerName=SD-misas02-lab2&AttmntId=400003& SecId=E1024C4C63823544AA27B65D6A9E171C&Bpsid=0" width=988 align=baseline border=0>
If the SecId is missing then it might show up as a broken link(Image) and come up with a red 'x' mark on the screen.
To overcome the problem run the following commands on the Server -
The above commands should help in re-establishing the repository connection by means.