I wasn't able to replicate the workspace integrity error on my MacBook. Are there other time-consuming processes running? as Mac OS X is a multitasking OS, processes may conflict. What is your Mac? Try with only Xcode launched.You could also try the procedure we've already discussed at http://forum.arduino.cc/index.php?topic=49956.msg1206628#msg1206628
After two days of intensive search, the cause of the error reported by ScottG has been identified: non standard file names.Volume, folder or file names with space --e.g. My first project.ino-- , number as first character --e.g. 3D_library.h--, special letters as . + ~ --e.g. Wtv020sd16p.cpp~--, among other cases, raise an error with GCC and make.This is not specific to embedXcode. I've updated embedXcode to deal with those cases and plan to release it soon, but I strongly recommend to avoid the cases mentioned above. Needless to say I can't provide support for issues which are not related with embedXcode, as two major challenges are ahead: OS X Mavericks with Xcode 5 and Arduino 1.5 framework.
Arduino IDE works fine in Mavericks, as it is based on Java~~
Just so I'm clear on updating projects to the latest embedxcode version - if my project is rev 108 or higher, then when new versions of embedxcode come out, I can update that project to the latest embedxcode version. But projects 107 or lower are not updatable, is that correct?