I'm not sure why you are experiencing the problem, when apparently other users do not. However, perhaps the easiest solution is to copy libmaloc.dylib into the same directory as the apbs executable that you are attempting to run.
There are also other options available, from copying the library into one of the standard directories, to setting environment variables to point to the APBS lib directory. I can point you to Apple's documentation if you want to know more about these other
Please let me know if just copying the library does not work, and we'll dig a bit deeper.
Hi Fateme --
I am Cc'ing Keith Fligg and Liz Jurrus, who can help you with this problem. What version of APBS did you install? What version of Mac OS X are you running?
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