Hi John, I get the feeling that the problem I am experiencing is due to an improper install of the "Tk" package. I have narrowed the problem to libpng.a I get the following error messages when I simply try to: [CI ,prod, D_CI_DEV_SS]#> perl -MTk::PNG -e '' Can't load '/usr/opt/perl5/lib64/site_perl/5.8.2/aix-thread-multi-64all/auto/Tk/PNG/PNG.so' for module Tk::PNG: 0509-022 Cannot load module /usr/opt/perl5/lib64/site_perl/5.8.2/aix-thread-multi-64all/auto/Tk/PNG/PNG.so. 0509-150 Dependent module libpng/libpng.a(libpng.so.3) could not be loaded. 0509-022 Cannot load module libpng/libpng.a(libpng.so.3). 0509-026 System error: A file or directory in the path name does not exist. 0509-022 Cannot load module /usr/opt/perl5/lib64/site_perl/5.8.2/aix-thread-multi-64all/auto/Tk/PNG/PNG.so. 0509-150 Dependent module /usr/opt/perl5/lib64/site_perl/5.8.2/aix-thread-multi-64all/auto/Tk/PNG/PNG.so could not be loaded. at /usr/opt/perl5/lib64/5.8.2/aix-thread-multi-64all/DynaLoader.pm line 229. at -e line 0 Compilation failed in require. BEGIN failed--compilation aborted. Any idea what can be wrong? My LIBPATH environment variable is correct. Any help will be appreciated. Regards, Phil