Hi, All; I tried to load the 'genetics' library but it failed with the following message. Can you help me with this? Thanks in advance. > library(genetics) Loading required package: gdata Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library '/Library/Frameworks/R.framework/ Versions/2.5/Resources/library/gtools/libs/ppc/gtools.so': dlopen(/Library/Frameworks/R.framework/Versions/2.5/Resources/ library/gtools/libs/ppc/gtools.so, 6): Library not loaded: /Library/ Frameworks/R.framework/Versions/2.4/Resources/lib/libR.dylib Referenced from: /Library/Frameworks/R.framework/Versions/2.5/ Resources/library/gtools/libs/ppc/gtools.so Reason: Incompatible library version: gtools.so requires version 2.4.0 or later, but libR.dylib provides version 2.2.0 Error: package 'gdata' could not be loaded I am using Mac OS X R 2.5.0. The libraries, 'genetics' v1.2.1, 'gtools' v2.3.1, and 'gdata' v2.3.1 are already installed. Tae-Hoon Chung Post-Doctoral Researcher Computational Biology Division, TGEN 445 N 5th St. Phoenix, AZ 85004 USA O: 1-602-343-8724 F: 1-602-343-8840 [[alternative HTML version deleted]]