Problem: MrSID file does not display correctly in ArcView 3.x
MrSID files display as black and white lines or as squares when added as data into ArcView 3.x.
ArcView 3.x only supports up to MrSID Generation 2; MrSID Generation 3 and newer do not display correctly.
Solution or Workaround
Download and install an updated AVMRSID.DLL from the LizardTech website:
Please be aware that third-party DLL's are unsupported by ESRI. Continue at your own risk.
Visit the LizardTech website and navigate to the 'Third Party Plug-ins and Updates' section to get more information and download the appropriate file.