I am trying to create a histogram with the following code    Options pagesize=45; Data Fish; Input time quality @@; Cards; 0 8.5 0 8.4 3 7.9 3 8.1 6 7.8 6 7.6 9 7.3 9 7.0 12 6.8 12 6.7 ; Run; Proc Reg; Model quality=time; plot quality*time='*'; plot R.*P.='?'; plot R.*time='@'; output out=error R=resid; Run; Proc Chart; vbar resid; run;   The following errors occur    ERROR: Appendage SASXGANO not found, unable to produce graphics. NOTE: The SAS System stopped processing this step because of errors. WARNING: The data set WORK.ERROR may be incomplete. When this step was stopped there were 0 observations and 0 variables. WARNING: Data set WORK.ERROR was not replaced because this step was stopped. NOTE: PROCEDURE REG used (Total process time): real time 10.66 seconds cpu time 2.24 seconds       96 Proc Chart; 97 vbar resid; ERROR: Variable RESID not found. 98 run;   Any suggestions on how to fix this?      ... View more