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ds9 error messages

different versions of ds9 throw different errors for the same file.

Verison 7.3.2

!! AST: Error at line 3509 in file fitsimage.C.
!  astRead(FitsChan): A longitude axis ('HPLN-TAN') was found without a corresponding latitude axis.

Versionn 8.1

!! AST: Error in routine wcsSkyFrame at line 37 in file frame/wcsast.C.
!  astSet(FrameSet): Cannot maintain FrameSet integrity.
!  Unable to accommodate the attribute setting "System=FK5, Equinox=J2000".