Some functions return other values - these are documented for those particular functions.

You can copy the error codes from the appropriate section below and paste into the start of your script file, to predefine all known return codes.

Error codes ready for use in VBscript programs

const eOK = 0 ' No error
const eWorldOpen = 30001 ' The world is already open
const eWorldClosed = 30002 ' The world is closed, this action cannot be performed
const eNoNameSpecified = 30003 ' No name has been specified where one is required
const eCannotPlaySound = 30004 ' The sound file could not be played
const eTriggerNotFound = 30005 ' The specified trigger name does not exist
const eTriggerAlreadyExists = 30006 ' Attempt to add a trigger that already exists
const eTriggerCannotBeEmpty = 30007 ' The trigger "match" string cannot be empty
const eInvalidObjectLabel = 30008 ' The name of this object is invalid
const eScriptNameNotLocated = 30009 ' Script name is not in the script file
const eAliasNotFound = 30010 ' The specified alias name does not exist
const eAliasAlreadyExists = 30011 ' Attempt to add a alias that already exists
const eAliasCannotBeEmpty = 30012 ' The alias "match" string cannot be empty
const eCouldNotOpenFile = 30013 ' Unable to open requested file
const eLogFileNotOpen = 30014 ' Log file was not open
const eLogFileAlreadyOpen = 30015 ' Log file was already open
const eLogFileBadWrite = 30016 ' Bad write to log file
const eTimerNotFound = 30017 ' The specified timer name does not exist
const eTimerAlreadyExists = 30018 ' Attempt to add a timer that already exists
const eVariableNotFound = 30019 ' Attempt to delete a variable that does not exist
const eCommandNotEmpty = 30020 ' Attempt to use SetCommand with a non-empty command window
const eBadRegularExpression = 30021 ' Bad regular expression syntax
const eTimeInvalid = 30022 ' Time given to AddTimer is invalid
const eBadMapItem = 30023 ' Direction given to AddToMapper is invalid
const eNoMapItems = 30024 ' No items in mapper
const eUnknownOption = 30025 ' Option name not found
const eOptionOutOfRange = 30026 ' New value for option is out of range
const eTriggerSequenceOutOfRange = 30027 ' Trigger sequence value invalid
const eTriggerSendToInvalid = 30028 ' Where to send trigger text to is invalid
const eTriggerLabelNotSpecified = 30029 ' Trigger label not specified/invalid for 'send to variable'
const ePluginFileNotFound = 30030 ' File name specified for plugin not found
const eProblemsLoadingPlugin = 30031 ' There was a parsing or other problem loading the plugin
const ePluginCannotSetOption = 30032 ' Plugin is not allowed to set this option
const ePluginCannotGetOption = 30033 ' Plugin is not allowed to get this option
const eNoSuchPlugin = 30034 ' Requested plugin is not installed
const eNotAPlugin = 30035 ' Only a plugin can do this
const eNoSuchRoutine = 30036 ' Plugin does not support that subroutine (subroutine not in script)
const ePluginDoesNotSaveState = 30037 ' Plugin does not support saving state
const ePluginCouldNotSaveState = 30037 ' Plugin could not save state (eg. no state directory)
const ePluginDisabled = 30039 ' Plugin is currently disabled
const eErrorCallingPluginRoutine = 30040 ' Could not call plugin routine

Error codes ready for use in Jscript programs

var eOK = 0; // No error
var eWorldOpen = 30001; // The world is already open
var eWorldClosed = 30002; // The world is closed, this action cannot be performed
var eNoNameSpecified = 30003; // No name has been specified where one is required
var eCannotPlaySound = 30004; // The sound file could not be played
var eTriggerNotFound = 30005; // The specified trigger name does not exist
var eTriggerAlreadyExists = 30006; // Attempt to add a trigger that already exists
var eTriggerCannotBeEmpty = 30007; // The trigger "match" string cannot be empty
var eInvalidObjectLabel = 30008; // The name of this object is invalid
var eScriptNameNotLocated = 30009; // Script name is not in the script file
var eAliasNotFound = 30010; // The specified alias name does not exist
var eAliasAlreadyExists = 30011; // Attempt to add a alias that already exists
var eAliasCannotBeEmpty = 30012; // The alias "match" string cannot be empty
var eCouldNotOpenFile = 30013; // Unable to open requested file
var eLogFileNotOpen = 30014; // Log file was not open
var eLogFileAlreadyOpen = 30015; // Log file was already open
var eLogFileBadWrite = 30016; // Bad write to log file
var eTimerNotFound = 30017; // The specified timer name does not exist
var eTimerAlreadyExists = 30018; // Attempt to add a timer that already exists
var eVariableNotFound = 30019; // Attempt to delete a variable that does not exist
var eCommandNotEmpty = 30020; // Attempt to use SetCommand with a non-empty command window
var eBadRegularExpression = 30021; // Bad regular expression syntax
var eTimeInvalid = 30022; // Time given to AddTimer is invalid
var eBadMapItem = 30023; // Direction given to AddToMapper is invalid
var eNoMapItems = 30024; // No items in mapper
var eUnknownOption = 30025; // Option name not found
var eOptionOutOfRange = 30026; // New value for option is out of range
var eTriggerSequenceOutOfRange = 30027; // Trigger sequence value invalid
var eTriggerSendToInvalid = 30028; // Where to send trigger text to is invalid
var eTriggerLabelNotSpecified = 30029; // Trigger label not specified/invalid for 'send to variable'
var ePluginFileNotFound = 30030; // File name specified for plugin not found
var eProblemsLoadingPlugin = 30031; // There was a parsing or other problem loading the plugin
var ePluginCannotSetOption = 30032; // Plugin is not allowed to set this option
var ePluginCannotGetOption = 30033; // Plugin is not allowed to get this option
var eNoSuchPlugin = 30034; // Requested plugin is not installed
var eNotAPlugin = 30035; // Only a plugin can do this
var eNoSuchRoutine = 30036; // Plugin does not support that subroutine (subroutine not in script)
var ePluginDoesNotSaveState = 30037; // Plugin does not support saving state
var ePluginCouldNotSaveState = 30037; // Plugin could not save state (eg. no state directory)
var ePluginDisabled = 30039; // Plugin is currently disabled
var eErrorCallingPluginRoutine = 30040; // Could not call plugin routine

Error codes ready for use in PerlScript programs

my $eOK = 0; # No error
my $eWorldOpen = 30001; # The world is already open
my $eWorldClosed = 30002; # The world is closed, this action cannot be performed
my $eNoNameSpecified = 30003; # No name has been specified where one is required
my $eCannotPlaySound = 30004; # The sound file could not be played
my $eTriggerNotFound = 30005; # The specified trigger name does not exist
my $eTriggerAlreadyExists = 30006; # Attempt to add a trigger that already exists
my $eTriggerCannotBeEmpty = 30007; # The trigger "match" string cannot be empty
my $eInvalidObjectLabel = 30008; # The name of this object is invalid
my $eScriptNameNotLocated = 30009; # Script name is not in the script file
my $eAliasNotFound = 30010; # The specified alias name does not exist
my $eAliasAlreadyExists = 30011; # Attempt to add a alias that already exists
my $eAliasCannotBeEmpty = 30012; # The alias "match" string cannot be empty
my $eCouldNotOpenFile = 30013; # Unable to open requested file
my $eLogFileNotOpen = 30014; # Log file was not open
my $eLogFileAlreadyOpen = 30015; # Log file was already open
my $eLogFileBadWrite = 30016; # Bad write to log file
my $eTimerNotFound = 30017; # The specified timer name does not exist
my $eTimerAlreadyExists = 30018; # Attempt to add a timer that already exists
my $eVariableNotFound = 30019; # Attempt to delete a variable that does not exist
my $eCommandNotEmpty = 30020; # Attempt to use SetCommand with a non-empty command window
my $eBadRegularExpression = 30021; # Bad regular expression syntax
my $eTimeInvalid = 30022; # Time given to AddTimer is invalid
my $eBadMapItem = 30023; # Direction given to AddToMapper is invalid
my $eNoMapItems = 30024; # No items in mapper
my $eUnknownOption = 30025; # Option name not found
my $eOptionOutOfRange = 30026; # New value for option is out of range
my $eTriggerSequenceOutOfRange = 30027; # Trigger sequence value invalid
my $eTriggerSendToInvalid = 30028; # Where to send trigger text to is invalid
my $eTriggerLabelNotSpecified = 30029; # Trigger label not specified/invalid for 'send to variable'
my $ePluginFileNotFound = 30030; # File name specified for plugin not found
my $eProblemsLoadingPlugin = 30031; # There was a parsing or other problem loading the plugin
my $ePluginCannotSetOption = 30032; # Plugin is not allowed to set this option
my $ePluginCannotGetOption = 30033; # Plugin is not allowed to get this option
my $eNoSuchPlugin = 30034; # Requested plugin is not installed
my $eNotAPlugin = 30035; # Only a plugin can do this
my $eNoSuchRoutine = 30036; # Plugin does not support that subroutine (subroutine not in script)
my $ePluginDoesNotSaveState = 30037; # Plugin does not support saving state
my $ePluginCouldNotSaveState = 30037; # Plugin could not save state (eg. no state directory)
my $ePluginDisabled = 30039; # Plugin is currently disabled
my $eErrorCallingPluginRoutine = 30040; # Could not call plugin routine