Dear All, I hope my question has not already appeared in the forum. I'm new to the MacOS X platform and I'am experiencing some strange behaviour on the Mac OS X platform, with R 2.0.1 Here is the error message I get when doing such a basic thing as ls() or summary(an_object): 2005-04-15 14:59:48.177 R[1147] *** Assertion failure in -[NSMutableRLEArray objectAtIndex:effectiveRange:], String.subproj/NSAttributedString.m:1009 2005-04-15 14:59:48.178 R[1147] *** NSTimer discarding exception 'NSInternalInconsistencyException' (reason 'Access invalid attribute location 65505 (length 65505)') that raised during firing of timer with target 3b0a60 and selector 'runRELP:' or 2005-04-15 15:21:04.851 R[1221] *** NSTimer discarding exception 'NSRangeException' (reason '*** NSRunStorage, _NSBlockNumberForIndex(): index (2125) beyond array bounds (2000)') that raised during firing of timer with target 3b0a60 and selector 'runRELP:' After that, the R console blocks, and I need to relaunch the software. Thanks in advance for any possible hint... Th. Fuhs