litte workaround until the problem is official fixed:
download the 6.2.0 source package and extract all files (without Makefile*) from the 'images' subfolder of the archive to /var/lib/netxms/images
drop the column image_data in your database instance. in my case, with MySQL:
ALTER TABLE `images` DROP `image_data`;
running the "nxdbmgr upgrade" command again
download the 6.2.0 source package and extract all files (without Makefile*) from the 'images' subfolder of the archive to /var/lib/netxms/images
drop the column image_data in your database instance. in my case, with MySQL:
ALTER TABLE `images` DROP `image_data`;
running the "nxdbmgr upgrade" command again