Hi, I am having issues opening CcpNMR, the error message appeared is given below. [JAYAKRIsMacBook:~] shenoy% analysis Model read finished. Duration 1.10657000542 Model validity check skipped Traceback (most recent call last): File "/Users/shenoy/Documents/Softwares/ccpnmr/ccpnmr2.4/python/ccpnmr/analysis/AnalysisGui.py", line 226, in <module> main(projectDir, max_size, glDirect) File "/Users/shenoy/Documents/Softwares/ccpnmr/ccpnmr2.4/python/ccpnmr/analysis/AnalysisGui.py", line 88, in main root = Tkinter.Tk() File "/Users/shenoy/Documents/Softwares/ccpnmr/python2.7/lib/python2.7/lib-tk/Tkinter.py", line 1810, in __init__ self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use) _tkinter.TclError: no display name and no $DISPLAY environment variable >>> Thanks in advance for any help. Best, Jaya ######################################################################## To unsubscribe from the CCPNMR list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCPNMR&A=1