Well, I think it is important to have a standard setup when asking for help on the maillist.
J will do a reinstall this weekend, and then use pkg install for all my installations.
For this cenon package, I don't mind giving it a try. Is it ok if I install 10.4?
And then I do pkg install xenon?
I'm currently on 11.1, and indeed, the package is installed, but the program is not working (on my non-standard installation):
[edwin@ottopedi ~]$ openapp Cenon
2017-11-09 02:59:10.141 Cenon[4708:100117] styleoffsets ... guessing offsets
2017-11-09 02:59:10.145 Cenon[4708:100117] styleoffsets ... guessing offsets
2017-11-09 02:59:10.260 Cenon[4708:100117] Unsupported... This is an XCode 5 XIB file.
2017-11-09 02:59:10.277 Cenon[4708:100117] Could not instantiate Xib unarchiver/Unable to parse Xib.
2017-11-09 02:59:10.281 Cenon[4708:100117] Failed to load Xib
2017-11-09 02:59:10.288 Cenon[4708:100117] Unsupported... This is an XCode 5 XIB file.
2017-11-09 02:59:10.304 Cenon[4708:100117] Could not instantiate Xib unarchiver/Unable to parse Xib.
2017-11-09 02:59:10.304 Cenon[4708:100117] Failed to load Xib
2017-11-09 02:59:10.307 Cenon[4708:100117] Cannot load the main model file 'Main'
2017-11-09 02:59:10.330 Cenon[4708:100117] Problem posting notification: <NSException: 0x2c6527d0> NAME:NSInvalidArgumentException REASON:-[NSFileManager createSymbolicLinkAtPath:withDestinationPath:error:]: unrecognized selector sent to instance 0x2a1a6f10 INFO:(null)