I am just beginning a search of possible causes for this problem, and would appreciate any assistance. THE SETTING I am running a multithreaded Qt application which interfaces with ROOT and has been running for over a year now. Everything is currently built on Linux (RedHat 8.0) using GCC 3.2 (which is the setup successfully used for the last four months). I usually build ROOT from CVS, but I only update it once a month or so (because I have to wait for lulls in production work to update the installations on all the workstations). I just updated ROOT from CVS today. The last successful version was updated on 21 Feb 03. THE PROBLEM The problem with the current version of ROOT: when I draw a TH2D using "COLZ", I get the x/y axes and nothing more. There is no data displayed, and there is no z legend display. When I bring up the DrawPanel, the surface and lego plots work, but the contour, colors, arrows, and boxes plots do not work (all that is displayed is the x,y axes). I have not tried other options, yet. Unfortunately for me, I can run tutorials/draw2dopt.C from ROOT and everything works fine, so I can't provide example code that fails. I have downloaded both the root_v3.05.02.source.tar.gz and root_v3.05.03.source.tar.gz distributions for testing. My application works with 3.05/02 but fails with 3.05/03. Note: the only difference between the working application and the "broken" application is the version of ROOT. I just remove one version of ROOT and install the other and rebuild my application. No other software on my workstation changes. THE PLAN My plan is to go through and make small incremental changes to transition ROOT from 3.05/02 to 3.05/03 and see what makes my application break. THE PLEA If anyone on this list has any insights into possible causes for this behaviour, I would be most grateful to hear them. Thanks, Tony Colley ITT Industries, A/CD
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