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
There was an error in creating a Selector for method step in Class swarm.analysis.EZDistributionImpl.
' H) G" J. f7 H3 ~3 @: j7 o. Mswarm.analysis.EZDistributionImpl.step returns null
The process will be terminated.
! r7 E1 \3 n/ q$ C! t* z' X3 \+ a8 Z  ](Tcl -eval couldn't read file "F:Swarm-2.2-java/lib/tcl8.4//word.tcl": no such file or directory
  \# g1 Z; Y( y" g    while executing
+ c+ f# ^( a, l"source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl"
# Y  U$ h5 P8 m5 O8 lwhile evaluating: source F:\Swarm-2.2-java/lib/tcl8.4//word.tcl
. p6 E2 \0 ~; o( r! D" L*** event raised for warning: WarningMessage
5 i/ j4 ~6 e1 |*** function: _i_ProbeMap__addProbe_(), file: /src/swarm/src/objectbase/ProbeMap.m, line: 606
  N8 K5 w& r2 S2 eAttempt to add null probe
( j2 s) H) c$ g) m6 h- g+ S- V*** execution continuing...
; G  C; [$ p% o请问第一个参数应该是什么呢 我设的是ezdist（一个EZDistribution object），
0 @% r3 h7 i1 n- P请问是怎么回事呢？多谢大家了~