Date: Thu, 7 Jun 2012 15:10:40 GMT
From: sd1759@nyu.edu
To: xmmhelp@sciops.esa.int
Cc: sd1759@nyu.edu
Subject: Help for extracting spectrum from X-select

Full_Name: Sumit Dahal
Submission from: (NULL) (216.165.95.72)


I am using XMMSAS with HEASoft and ds-9 in Mac OS Lion 10.7.4, I am having
problems to run the perl script xsl_xmm_epic_makeresp while extracting spectrum
for EPIC data. 
After using "extract spectrum" command, when I run the command "save spectrum
resp=yes" in xselect, I get the following message:

rmfgen format=var rmfset=XMMSOURCENEW.rmf spectrumset=XMMSOURCENEW.pha
threshold=1.0e-6

dyld: Library not loaded: /sasbuild/local/libpng_1.2.44/lib/libpng12.0.dylib
  Referenced from: /Users/sumitdahal/Desktop/XMM/xmmsas_20120523_1704/lib/libssc.4.26.dylib
  Reason: image not found

arfgen arfset=XMMSOURCENEW.arf spectrumset=XMMSOURCENEW.pha withrmfset=yes
rmfset=XMMSOURCENEW.rmf extendedsource=no modelee=yes withbadpixcorr=no
modelootcorr=yes useodfatt=no

dyld: Library not loaded: /sasbuild/local/libpng_1.2.44/lib/libpng12.0.dylib
  Referenced from: /Users/sumitdahal/Desktop/XMM/xmmsas_20120523_1704/lib/libssc.4.26.dylib
  Reason: image not found

I have already downloaded the perl script as mentioned in the website but still
I am having problems with putting RMF and ARF file because of this error
message.

What should I do?

Thanks for the help