The stream is not a CLPort registry stream since it is missing the magic GUID in the first line.
In some rare instances, you may see the following error in the Pylon CL Configurator when probing for cameras:
"The stream is not a CLPort registry stream since it is missing the magic GUID in the first line".
A file may not have been created correctly during installation or may have been corrupted/overwritten at some point by other 3rd party software.
1. Delete the PortIDDeviceIDCache.ini or PortIDDeviceIDCache2.ini file, found in the folder below.
2. Relaunch the CL Configurator and probe the ports again to generate a new .ini file.
(Please note that these folders may be hidden by the operating system)
pylon 2.3 (PortIDDeviceIDCache.ini)
pylon 3 (PortIDDeviceIDCache.ini) and pylon 4 (PortIDDeviceIDCache2.ini):
English: C:\Users\All Users\genicam\xml\cache
German: C:\Benutzer\All Users\genicam\xml\cache
English: C:\document and settings\All Users\application data\genicam\xml\cache\
German: C:\Dokumente und Einstellungen\All Users\Anwendungsdaten\genicam\xml\cache\