Extension Manager 5.5 crashes after one second. I need to create a barcode for indesign; bought software that says you can create it directly in InDesign. But I can't open the .xzp file. It opens the Extension Manager which instantly crashes with the message "Extension Manager quit unexpectedly." I've tried it many times. I tried re-intalling AdobeExtensionManager5.5All.dmg,but when I click on the "install" icon, I get, “Install.app” can’t be opened. You should eject the disk image."
I'm stuck in an endless loop. Please help, I have a deadline due today. I'm running 10.8.5.