Thanks everybody. we found the problem. Programmer error. There was a space after the underscore that we missed.

Thanks for the cool way to dump your settings. I've worked in Fox since FoxBase and I didn't know that.

Thanks again,

>Randy,
>
>Is everybody using SP1?
>
>I just ran this code and it printed 8
>
>

dimension lax[5,5]
>lax[2,3] = "ABC_123"
>? ascan( lax, "ABC_123" )
>

>
>If you hold the shift key down while you click ok in the Tools, Options dialog you can dump all your settings. Here are mine:
>
>

SET TALK OFF
>SET NOTIFY OFF
>SET CLOCK OFF
>&& RecentlyUsedFiles = 12
>SET COMPATIBLE OFF
>SET PALETTE ON
>SET BELL ON
>SET BELL TO '', 1
>SET SAFETY OFF
>SET ESCAPE ON
>SET LOGERRORS ON
>SET KEYCOMP TO WINDOWS
>SET CARRY OFF
>SET CONFIRM OFF
>SET BROWSEIMECONTROL OFF
>SET STRICTDATE TO 1
>&& TabOrdering = 1
>&& ResWidth = -1
>&& ResHeight = -1
>&& GridHorz = 12
>&& GridVert = 12
>&& ScaleUnits = 0
>&& FormSetLib =
>&& FormSetClass =
>&& FormsLib =
>&& FormsClass =
>SET EXACT OFF
>SET NEAR OFF
>SET ANSI OFF
>SET LOCK OFF
>SET EXCLUSIVE OFF
>SET MULTILOCKS ON
>SET HEADINGS ON
>SET DELETED ON
>SET OPTIMIZE ON
>SET UNIQUE OFF
>SET CPDIALOG ON
>SET REFRESH TO 0,5
>SET ODOMETER TO 100
>SET BLOCKSIZE TO 64
>SET REPROCESS TO 0
>SET COLLATE TO ""
>&& SCCProvider =
>STORE "C:\PROGRAM FILES\MICROSOFT VISUAL FOXPRO 8\SCCTEXT.PRG" TO _SCCTEXT
>&& ProjectHookLib =
>&& ProjectHookClass =
>&& CrsBuffering = 1
>&& CrsMethodUsed = 1
>&& CrsWhereClause = 3
>&& CrsFetchSize = 100
>&& CrsMaxRows = -1
>&& CrsNumBatch = 1
>&& CrsUseMemoSize = 255
>&& SQLDispLogin = 1
>&& SQLTransactions = 1
>&& SQLConnectTimeOut = 15
>&& SQLIdleTimeOut = 0
>&& SQLQueryTimeOut = 0
>&& SQLWaitTime = 100
>SET DEFAULT TO c:\vfp8app\misc
>&& TMPFILES = c:\docume~1\david\locals~1\temp
>SET PATH TO c:\program files\microsoft visual foxpro 8\tools\;
>&& HelpTo = c:\program files\microsoft visual foxpro 8\dv_foxhelp.chm
>&& HelpCollection =
>SET HELP ON
>SET HELP COLLECTION
>SET HELP TO "c:\program files\microsoft visual foxpro 8\dv_foxhelp.chm"
>&& ResourceTo = c:\documents and settings\david\application data\microsoft\visual foxpro 8\foxuser.dbf
>SET RESOURCE ON
>SET RESOURCE TO "c:\documents and settings\david\application data\microsoft\visual foxpro 8\foxuser.dbf"
>SET SYSFORMATS OFF
>SET SECONDS ON
>SET CENTURY ON
>&& CurrSymbol = $
>SET CURRENCY LEFT
>SET CURRENCY TO "$"
>SET HOURS TO 24
>SET DATE TO AMERICAN
>SET DECIMALS TO 2
>SET FDOW TO 1
>SET FWEEK TO 1
>SET MARK TO ""
>SET SEPARATOR TO ","
>SET POINT TO "."
>&& DebugEnvironment = 1
>SET TRBETWEEN OFF
>STORE     0.00 TO _THROTTLE
>

>
>>We had an unusal problem with ASCAN yesterday.
>>
>>ASCAN(laArraay,'ABC_123') returned a 0 (zero) when ABC_123 was in the array.
>>
>>ASCAN(laArray,'ABC') returns a 5
>>
>>ASCAN(laArray,'ABC_') returns a 0
>>
>>So we know it's the underscore.
>>
>>It was a five dimensional array, and ABC_123 was in the 5th row, 1st col.
>>
>>This was unusual because ASCAN returned the position for 2 other developers on other machines. We've tried changing all of the envirionment variables that we can think of that might affect it, but no luck. (SET EXACT, SET ENGINEBEHAVIOR). We aslo tried passing some of the flags in ASCAN, but nothing seemed to work on this one machine.
>>
>>Everyone is running VFP 8.
>>
>>Thanks,