Here is a listing of errors associated with ActiveBar, and what they mean.

ActiveBar 3.0 Errors

Number	Description
2000	Cannot create file.
2001	Cannot open file.
2002	Invalid file format.
2003	Band not found.
2004	Invalid SubBand value. Cycle detected.
2005	Cannot open the SubBand of a tool. The SubBand is already in use or has an invalid DockingArea. Use DDDAPopup for popup bands.
2006	Invalid Tools collection index.
2007	Invalid Bands collection index.
2008	Bad collection index.
2009	Invalid property value.
2010	The tool currently does not have a valid picture defined.
2011	Duplicate Band name.
2012	Duplicate Tool ID.
2013	Cannot set the mask bitmap without setting the image bitmap first.
2014	The mask bitmap dimensions are not the same as the image bitmap.
2015	Unable to get the Window Handle for the control or form.
2016	The form must have the BorderStyle property set to None.
2017	Shortcuts must be an array of strings.
2018	Invalid tool type, the type must be DDTTControl or DDTTForm.
2019	Invalid shortcut.
2020	Window is not valid.
2021	Image not set.
2022	Invalid picture type, the picture must be a bitmap.
2023	Only one tool can have the AutoSize property set to a value other than ddASNone.
2024	Sizer Band Flag must be set to use this property.
2025	Only for use with SDI applications.
2026	Status bar band cannot have child bands.
2027	Child bands must be set to the normal band type.
2028	Out of memory
2029	Null name is not allowed.

Band Height and Width Errors

Number	Description
2032	The band must have the ddBFSizer flag set, or the ddDAPopup or the ddDAFloat value from the DockingAreaTypes enumeration selected for the width of the band. This error occurs when you attempt to set the width of a band that does not have the sizer flag set.
2034	The band must have the sizer flag set or have the dock area of floating to set its height. This error occurs when you attempt to set the height of a band that does not have the sizer flag set.
2035	When the sizer flag is set; the band must be floating, or docked to the left or right dock area to set the band s width. This error occurs when you attempt to set the width of a band with the sizer flag set and the band docked top or bottom.
2036	When the sizer flag is set; the band must be floating, or docked to the top or bottom dock area to set the band s height. This error occurs when you attempt to set the height of a band with the sizer flag set and the band is docked left or right.