El Capitan. Worth upgrading from Yosemite?

I think it was last year that Epson was a bit late updating their scanner drivers.

Always check the forums for your key applications before upgrading your OS.

Scan the Apple forums, run Google searches looking for glitches.

At the moment Adobe have screwed up Lightroom for a lot of people so the word is do not upgrade Lightroom (this is for 'doze as well as the Mac)

Re Dungassins troublesome iMac - take it back to the Apple Store - explain the problem and ask them to fix it or replace it, make sure you have a copy of all the data on the drive.  If it was bought by mail - contact the supplier and get them to help you by getting it fixed. It is not normal behaviour and is not acceptable - do not put up with it.

So digitus extractus and fast

Strange ...

Tried generating a greyscale tiff from MP Navigator.  Came out correct, and looks right if viewed in Preview or dropped into Photoscore - which now, for some unaccountable reason, is reading these files into a form which I can edit before exporting to Sibelius.

However, if I try to scan greyscale tiff directly into Photoscore (using the Twain driver, as it now reports 'no scanner driver present' if I switch the scan mode to 'Photoscore'), it is still generating garbage. 

So looks as if I'll either be scanning into Photoscore (using Twain) as B&W rather than grayscale, or scanning my music using MP Navigator as grayscale to generate tiff files and then importing them into Photoscore.

I suspect some of the problem may be Photoscore itself, because is I scan directly into Photoscore (Twain), I find that I have to click on the bit on the Mac top bar where it says Photoscore Scan before Photoscore will actually import the scan it has just generated!  I think an email to them is needed to see if they have a solution.

However, on the bright side, I don't seem to be having the failure to delete Mail/Mail won't quit problem since the upgrade, although access to the NAS drives still seems slow, although speed is OK once I can actually see the files/directories in Finder.

Installed today's update to the previously installed El Capitan and iTunes - another 4 hour doddle.  Patience, grasshopper.

Crikey, that seems a bit excessive. Just gave it a go with my retina MacBook Pro (late 2013), installed the iTunes and El Capitan updates. From App Store update page to login screen, 18 minutes. Using basic wireless Sky broadband, not fibre. 

Where is the mute button in Safari, I can't see it on my Macbook?

Early reports suggest it's still flaky with some USB DACs, so I think I'm going to hold fire for a while (having already installed it, found I couldn't do a reviewing job for that reason, and gone back to Yosemite)

Thought I'd managed to solve most of the problems, although still a little flaky with photoscore.

Mail app now seems to be stable, and as a bonus my Mac hasn't been 'restarted because of a problem' since the upgrade.

However, Apple seem to have b*ggered up access to my NAS drives (QNAP and WDMyCloud).  Although they appear in the Finder sidebar, I often can't access them, and when I tried to rip a CD today (Traveling Wilburys Vol 3) using dBpoweramp to the Multimedia directory on the QNAP (having first opened a window to prove I could 'see' the field in that directory), the rip failed very rapidly with 'error' on every track.  Tried to re-rip a Bernie Marsden CD as a test, with same result.

Went to Windows 10 on Bootcamp, and initially got an error, but I remounted the QNAP there, and both CDs ripped OK.

Now trying to use Finder > GO to reset the NAS drive access on El Capitan, but so far not much joy.  It seems I can only get into the WD drive by using WDMyCloudDashboard, though even with that, I found that I had to manually copy the IP address of the drive into Safari to successfully get to the drive.

I wonder if the Genius Bar could fix it, or whether it would require someone to come to me and try it on my Network? ....

Don't recall having any of these problems yesterday, but they seem to date from the latest El Capitan update which was installed today.

Is it worth checking the QNAP / WD firmware is up to date ( I know the QNAP / WD isn't at fault ) and do a restart on it to see if that helps the Mac? Do you have the IPv6 enabled on the QNAP ? Or double checking some of the Mac's network settings ?  Do you use an Airport Extreme - checking the the settings on that too ? 

Well, I checked the QNAP firmware, and updated it.  Then enabled iPv6.  This seems to have solved the QNAP problem.

Don't have an Airport Extreme.

I seem to have eventually managed to get the WD MyCloud to work by doing a Factory (system) reset on it, then deleting all the WD software I could find on my Mac, and reinstalling it, then giving the drive a Static IP address on my BT Homehub5.

Of course, I haven't actually switched off the Mac and left it off, then come back to it yet, so I may be living in a fools' paradise!

Here's hoping that goes well too then. :-)