No thumbnails are shown in the BE
I just realized that I don't see any thumbnails in the BE (e.g. in filelist, in Web > Page or in image content elements). Recently this still worked...
I cleared the image cache in typo3temp/pics and the thumbnails for the frontend are regenerated and displayed in the FE correctly.
But in the BE I don't see any thumbnail.
gm 1.1.10 and
This is recognized in the Install Tool. The test images there render correctly.
(issue imported from #M14811)
#2 Updated by Chris topher about 9 years ago
I just investigated this a bit further:
When changing to utf-8 I also converted the Configuration files like localconf.php and realurl_conf.php to utf-8. My editor silently added a byte order mark at the beginning of the files.
When a thumbnail should be shown, thumbs.php is called. This then calls config_default.php which then calls localconf.php and realurl_conf.php. These files returned the byte order mark in the outputbuffer.
Finally this screwed up the header of the returned image file.
Converting the files back to ANSI solved the issue.