You always get a warn at std err if the default theme is not installed and you are using a theme set to an alternative path. The log message is not important because on debug builds, if no theme is found, it will assert anyway. A side effect of this verbosity is a lot of false positives on the WK2 bot: http://build.webkit.org/results/EFL%20Linux%2064-bit%20Debug%20WK2/r125561%20(1484)/results.html
Created attachment 158334 [details] Patch
Comment on attachment 158334 [details] Patch Clearing flags on attachment: 158334 Committed r125569: <http://trac.webkit.org/changeset/125569>
All reviewed patches have been landed. Closing bug.