Losing image links seems to be a common blogger problem. Since images uploaded to Blogger are linked to a large copy something happened to loose that clickability. It's possible that when images are moved in a post the link is not picked up with the rest of the code. Reliability can be increased by switching to Edit Html and moving the complete code.
This post is my May 3, 2008 reply in the enlarging photos in window thread.
"It's possible that you lost the link while moving images. That's a standard response, the problem is that if it's the first image in a post, how did the link get lost?
The clickability can be restored by editing the post Html, locating the image code and then inserting a link. The procedure may seem complicated, but it's not.
First, you need to know what typical Blogger image code looks like in Html: this is just the image, not the link. It's:
<img id="B_P_I_987654" style="cursor: pointer;" alt="" src= "http://bp9.blogger.com/_abcdefg/ Hijklmno/AAAAAAAA/U1239876/s400/prettypicture.jpg" border="0" />.
That needs to be wrapped in <a href=> </a> to be linked. To add a link, the portion of the code that is needed is the address: bp9.blogger.com/_abcdefg/Hijklmno/AAAAAAAA/U1239876 /s400/prettypicture.jpg
Blogger will add the http:// and everything else that is needed.
The other thing to understand is the folder name. In the address above the "s400" is the size of the image in the post (large in this example.) The full sized is normally addressed as "s1600-h" and that's what I will use here. Note that addresses are case sensitive and the small number may be s200 or s320.
This procedure will involve using a plain text editor to modify the address. Once you do it one time and see what's going on, you can eliminate those steps and work right in the link dialog box.
To add a link to a Blogger-uploaded image that has the link info missing, do the following:
– Open a text editor (not Word.)
– Edit the post and switch to Edit Html.
– Locate the image that is not wrapped in <a href > </a>.
– Copy the image address. It starts with "bp" and ends with "jpg", as indicated above.
– Paste the address into the text editor.
– In the text editor, change the size folder from s400 to s1600-h. (Case sensitive)
– Copy the modified address.
– Go back to the post edit window.
– Select the full image code from <img to />.
– Click on the link button on the tool bar.
– In the Enter URL box, paste the modified image address from the text editor. The result will be: http://bp.../s1600-h/...jpg.
– Click OK.
– Preview the post.
– Hover the image, the status bar should show the s1600-h address and clicking should take you to the full size image.