I noticed that one too, though I was just beginning the main campaign. I think it may have something to do with the particles in the engine trail... just a guess.
Update:
Redmenace, I've just tried out the new builds you uploaded (but haven't posted yet), and its giving me a tonne of pointless erros in debug mode... which gave no such errors in the previous CVS build. I get a load of:
Warning: Boolean '' type unknown; assuming 'no/false'
File:c:\fs2_open\code\parse\parselo.cpp
Line: 2226
[This filename points to the location of a file on the computer that built this executable]
followed by:
Error: weapons.tbl(line 2845:
Error: Required token = [#End] or [$Name:], found [+Type: HEAT ]
in weapon: @Rockeye.
File:c:\fs2_open\code\parse\parselo.cpp
Line: 668
[This filename points to the location of a file on the computer that built this executable]
with all MVPs but adveffects installed with the 710 patches. Under FS Port, I get:
Error: weapons.tbl(line 1190:
Error: Required token = [#End] or [$Name:], found [+Type: HEAT ]
in weapon: @MX-50.
File:c:\fs2_open\code\parse\parselo.cpp
Line: 668
[This filename points to the location of a file on the computer that built this executable]
Since these are the first missile entries in the tables, it's got to have something to do with it expecting the end of the missile entry early. Release builds from this CVS give the missile error messages as well.