Resolution
Graphic in SiteStudio is not generated and in the ss.log files I find the error like this:
2007-01-19 02:56:16,164 [TP-Processor12] WARN psoft.masonry.Builder 29380 - No connection to ImageMaker for image:gen_11
But Imaker is running.
Solution:
Most probably this error mean that localhost is not resolve correctly in your SiteStudio server.
Please try to set the IMAKER variable to 127.0.0.1 in masonry.properties file and restart SiteStudio.