Hello again, yowwoy.

What you are describing today, the Chrome extension not responding, is a different problem.  To reduce frustration, don't uninstall/reinstall BookMacster any more.  We have a tool in BookMacster which provides a lot of troubleshooting for just a couple minutes of work.  To use it,

• Run BookMacster.
• Click in the menu: Help > Trouble Zipper.

Trouble Zipper will ask a few questions about what you want to include.

• For Question B (Bookmarks), we probably don't need those, but if you don't mind, click Include Bookmarks and then select Chrome.
• For Question L (Sync Logs), it might be helpful to include those.
• For Question F (Files), it would be helpful to click "Search" and then include your BookMacster.bkmslf file

• Send me the resulting .zip as instructed.

Hello again, yowwoy.

When BookMacster launches, it does some housekeeping chores.  One of these chores is to verify that there are still launchd agents installed in OS X corresponding to the Agents required for your Syncing configuration.  Those three log entries that begin with

      Add|updated launchd com.sheepsystems...

indicate that BookMacster found three of these agents, probably the ones which watch your Chrome, Firefox and Safari bookmarks, to be missing.  And it reinstalled them.

I wonder if you are possibly running some utility which thinks its' doing a good deed by periodically knocking out launchd agents it doesn't like.  Each one is represented by a file.  To see your launchd agent files

• Activate Finder.
• Click in the menu: Go > Go to folder….  A small text field will appear in a sheet.
• Copy and paste in this path into the text field:
      ~/Library/LaunchAgents
• Click Go.

You should see 3-5 files in there whose name begins with

      com.sheepsystems.BookMacster...

But, except when sync operations are pending, none of them should have doSoon or standby near the end of their names.  If they do, this may indicate an agent which has "hung".  This possibility is also indicated by the orphaned log entry Job already staged….  BookMacster should automatically clear out "hung" agents after, I think, a few hours.

Please do one or more of these:

• Consider, as I said above, if you've recently installed anything which might be messing with your launchd agents
• "Start over" by switching off Syncing in BookMacster.  All of BookMacster's launchd files should instantly disappear.  Then, switch Syncing back on.  Three to five BookMacster launchd files should reappear.  Keep an eye on that launchd folder for a couple days, and see if anything appears or disappears.  Additional files, with doSoon or standby in their names, will come and go for a few minutes when bookmarks are changed, but the original 3-5 files, should not disappear.  They may disappear momentarily during syncing but should reappear within a few seconds.
• Make a .zip archive of that Launch Agents folder and email to us if you think I should have a look at it.

Thanks for the response. Sync is set of 0-2 minutes. This time I started a new clean bookshelf. removed and reinstalled browser plugins - verified they worked. Closed Bookmacster. Added a bookmark in Chrome at 17:38:15 and waited 10 minutes. No bookmark showed up in browsers. The log follows. Appreciate the help.

2016-05-17 17:48:17      BkMctr      1587      Did finish launching
2016-05-17 17:48:17      BkMctr      1587      Opened: 4DE3E7DE-7176-4804-8ED0-1933526C1860 /Users/DJB/Library/Application Support/BookMacster/Bookmarkshelf Documents/DJB.bkmslf
2016-05-17 17:48:17      BkMctr      1587      Add|updated launchd com.sheepsystems.BookMacster.4DE3E7DE-7176-4804-8ED0-1933526C1860.000.001
2016-05-17 17:48:17      BkMctr      1587      Add|updated launchd com.sheepsystems.BookMacster.4DE3E7DE-7176-4804-8ED0-1933526C1860.000.002
2016-05-17 17:48:17      BkMctr      1587      Add|updated launchd com.sheepsystems.BookMacster.4DE3E7DE-7176-4804-8ED0-1933526C1860.000.000
2016-05-17 17:43:26      Worker      1468      Ignored spurious Chrome.Profile 2 (0 change files)
2016-05-17 17:42:04      Worker      1464      Invoked for Agnt 1, Trig 2 (Firefox) of Doc 4DE3
2016-05-17 17:42:04      Worker      1464      Cause: Touch: Firefox.default.  Sponsor:launchd
2016-05-17 17:42:04      Worker      1464      Job already staged; escalated to import all
2016-05-17 17:42:04      Worker      1464      Exiting with code=0
2016-05-17 17:39:28      Worker      1461      Ignored spurious Safari
2016-05-17 17:39:26      Worker      1457      Invoked for Agnt 1, Trig 0 (Chrome (Person 1)) of Doc 4DE3
2016-05-17 17:39:26      Worker      1457      Cause: Touch: Chrome.Profile 2.  Sponsor:launchd
2016-05-17 17:39:26      Worker      1457      Job already staged for Trig 0 (Chrome (Person 1))
2016-05-17 17:39:26      Worker      1457      Exiting with code=0
2016-05-17 17:37:20      BkMctr      1426      Did finish launching

Im a long time and quite satisfied user of Bookmacster. Normally running Bookmacster without any issues. Noticed a couple days ago bookmarks are not syncing properly - Chrome, Safari and Firefox. Yesterday I tried to troubleshoot - also upgraded to version 2 as well. I entirely deleted the bookshelf several times, including manual delete  of all files and folders inside user/library/bookmacster - and entirely rebuilt the bookshelf. I also did the following test (this basic pattern is exactly what I found over several tests):

at 15:07:01 added bookmark to Chrome
waited 2 minutes
opened Bookmacster
the bookmark not found in the content tab
attached error message pops up every time (for chrome, safari and firefox)

copied below see log messages:
2016-05-15 15:09:04      BkMctr      34400      Did finish launching
2016-05-15 15:09:04      BkMctr      34400      Opened: 3E884CE5-3607-4328-A588-E7C4CCC6E2A1 /Users/DJB/Library/Application Support/BookMacster/Bookmarkshelf Documents/DJB.bkmslf
2016-05-15 15:07:04      Worker      34389      Invoked for Agnt 1, Trig 0 (Chrome (First user)) of Doc 3E88
2016-05-15 15:07:04      Worker      34389      Cause: Touch: Chrome.Profile 2.  Sponsor:launchd
2016-05-15 15:07:04      Worker      34389      Job already staged for Trig 0 (Chrome (First user))
2016-05-15 15:07:04      Worker      34389      Exiting with code=0
2016-05-15 15:06:47      Worker      34375      Invoked for Agnt 1, Trig 0 (Chrome (First user)) of Doc 3E88

Sometimes bookmarks are added and show up in browsers, other times they do not.

Advice appreciated.