(2017-02-12, 18:15:08)lotova Wrote: So my problem maybe is that my GetSimple installation makes no thumbnails. I have no thumbnails in data/thumbs except of one image. And if I want to insert an image into the page through the editor, there are no thumbnails of uploaded images in the left-most column, only the same substitute icon.
When you are in the filemanager and click on an image, Is there somewhere at the top a link that says Current Thumbnail? Try to click on it.
Also, if you then scroll down you should be able to create a custum thumb.
You could try enabling debug mode and see if you get errors: http://get-simple.info/forums/showthread.php?tid=877
(or do that via this plugin: http://get-simple.info/extend/plugin/debugmode/130/ )