During the install or uninstall of the ER Mapper ECW plug-in, the following message is displayed:
"ERM009: Could not get value IMAGINE_HOME under the HKLM registry key: SOFTWARE\ESRI\Raster\Environment.
Please refer to the readme.txt and contact support."
The ECW plug-in install and removal requires registry keys which are no longer present or created by ArcGIS 9.2.
ArcGIS 9.2 natively supports ECW reading and also compresses images with JP2 compression. The ECW plug-in is no longer required to perform these functions in ArcGIS 9.2.