求问关于Swarm产生柱状图的问题 多谢大家了！！

mushroom89

各位好，我想请教一下，我想产生一个柱状图，但是在buildActions（）好像selector那有问题，说
( p( O9 o. Q" t+ x" X# e7 [There was an error in creating a Selector for method step in Class swarm.analysis.EZDistributionImpl.
+ V+ x3 h- c: _1 ]7 _# Q# V" i7 i6 ?swarm.analysis.EZDistributionImpl.step returns null
2 Q; s5 v4 j' X9 I. l  d! E# wThe process will be terminated.
' d  {! s# d! b2 v(Tcl -eval couldn't read file "F:Swarm-2.2-java/lib/tcl8.4//word.tcl": no such file or directory
6 \7 }# {6 b! c3 H4 X0 S    while executing
"source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl"
while evaluating: source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl
*** event raised for warning: WarningMessage
8 W- o( l9 L0 C8 u- }$ @# q6 H5 ~*** function: _i_ProbeMap__addProbe_(), file: /src/swarm/src/objectbase/ProbeMap.m, line: 606
( e" F1 L6 q1 x8 y5 U- AAttempt to add null probe
*** execution continuing...
" _9 z- Y$ h9 x5 t, z请问第一个参数应该是什么呢 我设的是ezdist（一个EZDistribution object），
请问是怎么回事呢？多谢大家了~