Should be bts-background.jpg I assume:
make[3]: *** No rule to make target 'programs/qt_wallet/htdocs/img/btsx-background.jpg', needed by 'programs/qt_wallet/qrc_htdocs.cpp'. Stop.
CMakeFiles/Makefile2:2057: recipe for target 'programs/qt_wallet/CMakeFiles/BitShares.dir/all' failed
make[2]: *** [programs/qt_wallet/CMakeFiles/BitShares.dir/all] Error 2
CMakeFiles/Makefile2:2069: recipe for target 'programs/qt_wallet/CMakeFiles/BitShares.dir/rule' failed
make[1]: *** [programs/qt_wallet/CMakeFiles/BitShares.dir/rule] Error 2
Makefile:654: recipe for target 'BitShares' failed
make: *** [BitShares] Error 2
Ya, there are a lot of references to these files. I started to fix them but there are too many. I'll wait for the next patch.
The fix is in bitshares branch, maybe you need to checkout that.
Thanks, problems like this is what we want to check for before releasing final version. Fixed: https://github.com/BitShares/qt_wallet/commit/f198ab6a0f9e75db69a6b450ad1e14062ab45e3d