WINBUGS undefined real result

undefined real result
 Math.Ln   [0000018BH]
	.x	REAL	-5.455851992408611E-9
 WBDevDJLTruncatedNormal.LogFullLikelihood   [000001CEH]
	.left	REAL	0.0
	.mu	REAL	0.007414731496658705
	.node	WBDevUnivariateC.Node	[016E89D0H]
	.right	REAL	10.0
	.sqrtTau	REAL	6.152266753850198E-9
	.tau	REAL	3.785038621053046E-17
	.value	REAL	-19.82538377837897
	.x	REAL	6.5
 WBDevDJLTruncatedNormal.LogPropLikelihood   [000001F8H]
	.node	WBDevUnivariateC.Node	[016E89D0H]
	.value	REAL	-19.82538377837897
 WBDevUnivariateC.Node.Likelihood   [0000076DH]
	.logLikelihood	REAL	-19.82538377837897
	.node	WBDevUnivariateC.Node	[016E89D0H]
 UpdaterSlice.Updater.Conditional   [000000A6H]
	.cond	REAL	37.43476158544511
	.linearCoef	REAL	0.0
	.list	GraphStochastic.List	[016F1490H]
	.node	GraphStochastic.Node	[016E89D0H]
	.prior	GraphStochastic.Node	[016E85E0H]
	.quadCoef	REAL	0.0
	.updater	UpdaterSlice.Updater	[016F32F0H]
	.x	REAL	3.785038621053046E-17
 UpdaterSlice.Updater.SampleSlice   [00000178H]
	.cond	REAL	13.46492042752995
	.h	REAL	18.85209430192665
	.iter	INTEGER	99992
	.lX	REAL	0.0
	.oldX	REAL	7.2147149277774E-17
	.prior	GraphStochastic.Node	[016E85E0H]
	.rX	REAL	1.36294356834272E-16
	.rand	REAL	3.785038621053046E-17
	.res	INTEGER	0
	.updater	UpdaterSlice.Updater	[016F32F0H]
 UpdaterSlice.Updater.MCMC   [0000073FH]
	.h	REAL	18.85209430192665
	.lB	BOOLEAN	TRUE
	.logRand	REAL	-3.169454126028375
	.oldX	REAL	7.2147149277774E-17
	.overRelax	BOOLEAN	FALSE
	.prior	GraphStochastic.Node	[016E85E0H]
	.rB	BOOLEAN	FALSE
	.res	INTEGER	0
	.updater	UpdaterSlice.Updater	[016F32F0H]
	.x	ARRAY 4 OF REAL	Elements
	.y	ARRAY 4 OF REAL	Elements
 BugsUpdaters.Updater.MCMC   [000005B8H]
	.chain	INTEGER	0
	.depth	INTEGER	1
	.i	INTEGER	0
	.name	BugsNames.Name	[016E5710H]
	.ok	BOOLEAN	TRUE
	.overRelax	BOOLEAN	FALSE
	.res	INTEGER	0
	.size	INTEGER	1
	.string	ARRAY 120 OF CHAR	""   ...
	.updater	BugsUpdaters.Updater	[016F32A0H]
 BugsSampler.MCMC   [0000036DH]
	.chain	INTEGER	0
	.cursor	BugsSampler.List	[016F3410H]
	.depth	INTEGER	1
	.depth0	INTEGER	1
	.depth1	INTEGER	2
	.offset	INTEGER	2287428
	.ok	BOOLEAN	TRUE
	.overRelax	BOOLEAN	FALSE
	.updater	BugsUpdaters.Updater	[016F32A0H]
 BugsCmds.Action.Step   [00000B1FH]
	.a	BugsCmds.Action	[0168B550H]
	.chain	INTEGER	0
	.i	INTEGER	16
	.j	INTEGER	0
	.numChains	INTEGER	1
 BugsCmds.Action.Do   [00000C58H]
	.a	BugsCmds.Action	[0168B550H]
	.elapsedTime	LONGINT	647C21F1647B0384H
	.profileList	ARRAY 2024 OF CHAR	""   ...
	.res	INTEGER	275
	.s	ARRAY 120 OF CHAR	4E8DX, 7538X, 1018X, 18X, 0C019X   ...
 Services.Exec   [00000136H]
	.a	Services.Action	[0168B550H]
	.t	POINTER	[647B0384H]
 Services.IterateOverActions   [000002F4H]
	.p	Services.Action	[0168B550H]
	.t	POINTER	NIL
	.time	LONGINT	111266387
 Services.StdHook.Step   [0000034DH]
	.h	Services.StdHook	[0165E380H]
 HostWindows.Idle   [00004A86H]
	.focus	BOOLEAN	FALSE
	.tick	Controllers.TickMsg	Fields
	.w	HostWindows.Window	NIL
 HostMenus.TimerTick   [00003422H]
	.lParam	INTEGER	0
	.ops	Controllers.PollOpsMsg	Fields
	.wParam	INTEGER	1
	.wnd	INTEGER	725212
 Kernel.Try   [00003A61H]
	.a	INTEGER	725212
	.b	INTEGER	1
	.c	INTEGER	0
	.h	PROCEDURE	HostMenus.TimerTick
 HostMenus.ApplWinHandler   [00003841H]
	.Proc	PROCEDURE	NIL
	.hit	BOOLEAN	FALSE
	.lParam	INTEGER	0
	.message	INTEGER	275
	.res	INTEGER	0
	.s	ARRAY 256 OF SHORTCHAR	"$ú""   ...
	.w	INTEGER	1802310830
	.wParam	INTEGER	1
	.wnd	INTEGER	725212
<system>   (pc=7660C4E6H,  fp=0022FB3CH)
<system>   (pc=7660C5E6H,  fp=0022FBB4H)
<system>   (pc=7660CC18H,  fp=0022FC14H)
<system>   (pc=76602E40H,  fp=0022FC24H)
 HostMenus.Loop   [00003BDEH]
	.done	BOOLEAN	FALSE
	.f	SET	{0..5}
	.n	INTEGER	0
	.res	INTEGER	0
	.w	HostWindows.Window	NIL
 Kernel.Start   [00002B8CH]
	.code	PROCEDURE	HostMenus.Loop