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Known bugs:
General:
You're right: The manual deserves a thorough rewriting.
Example (A.Rosca) in Sec.6.1: The madgraph option '2' is no longer supported,
and the more explicit replacement option 'n:QCD<=2' means not quite the
same thing, therefore the result (6.1.5) for this process is different.
There may be problems on systems other than Linux and DEC/Compaq/HP Alpha
Some Fortran 90 compilers are (still!) buggy and fail to compile WHIZARD.
CompHEP defaults to g77 as FORTRAN77 compiler and requires the environment
variable F77 to be set and exported if another compiler is to be used.
Color flow information in event files is known to be broken if the process
under consideration contains flavor sums.
Matrix element generators currently supported:
The included CompHEP version has no polarization. Color information
is not transferred to fragmentation in all cases.
The included version of Madgraph has no triple and quartic Higgs couplings.
There may be problems when the number of diagrams, wave
functions or some other counter becomes too large.
The colored O'Mega version is an intermediate hack and will be replaced
by a more complete one. But it should work.
By default, the color flow algorithm performs optimizations which can lead
to incorrect results if the model contains trilinear octet-octet-singlet
couplings of colored particles (e.g. ggH). If you work with a model which
contains such vertices, these optimizations can be disabled (at the
expense of more time spent on the generation of the matrix element code)
by exporting the environment variable
OMEGA_CLEAN_GLUONS=no
or using "omega c,2g" as matrix element generation method.
Structure functions:
CIRCE and EPA photon spectra are unpolarized
Specific bugs:
O'Mega flavor sum may break final-state symmetry, e.g. plotting
rapidity of first quark (not really a bug, but confusing)

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