the following are the messages that I get when updating software. Apple says that the problem should be solved by HP.
They are all separte windows with the same title.
System extension cannot be used
The system extension “/System/Library/Extensions/EPSONUSBPrintClass.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Deskjet_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_fax_io.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Inkjet1_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Inkjet2_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Inkjet3_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Inkjet4_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Inkjet5_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Inkjet7_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Inkjet8_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Inkjet_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Laserjet_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Officejet_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_Photosmart_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_PhotosmartPro_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_psa640_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
The system extension “/System/Library/Extensions/hp_qc_io_enabler.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.