Sorry for the trouble. I did a fresh install of Shashin on my test site and was able to delete it without any errors. I’m not sure what has caused these problems with your installation.
You can’t switch back and forth between versions 2 and 3 like that. When you upgrade to 3 it makes significant changes to the shashin database tables (and there is no “downgrade” code in shashin 2).
If you’re comfortable using FTP and phpMyAdmin (or a similar database tool your hosting provider should have), you can use FTP to delete the “shashin” folder from your plugins folder, and phpMyAdmin to remove the shashin database tables – wp_shashin_album and wp_shashin_photo. Let me know if I can advise further.
OK, deleted the Shashin folder via FTP and Toppa from the plugins menu. I also dropped the database tables.
Installed Shashin and Toppa again, added the RSS feed for my Picasa album, shortcode inserted into post, not displaying any photos.
So we can rule out any one-time oddity then. What is your PHP version? Since you got that error when deleting, I’m wondering if there is some subtle difference in how class autoloading works in one of the PHP versions.
Sorry for the delay. I just uploaded version 3.0.7. It turns out there actually was an uninstall problem, which is now fixed (I missed it before because I had another active plugin which uses my toppa plugin libs, which hid the problem). So it’s probably not the PHP version problem I was suspecting.
I still don’t know what’s causing the problem you’re having, but I did add some code that will now display an error if it’s not finding any photos that match the shortcode. That should help us narrow down the possible causes of the problem.
