Hi, I have updated my system from UM 16.04.5 to UM 18.04.1, when I run Dropbox, the icon does not appear in the top panel and I can not access the options.
To open and close the application I have to do it from the terminal.
The result of the terminal is:
juanjo@Vant:~$ caja-dropbox start
Starting Dropbox...dropbox: locating interpreter
dropbox: logging to /tmp/dropbox-antifreeze-z842Z8
dropbox: initializing
dropbox: initializing python 3.5.4
dropbox: setting program path '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/dropbox'
dropbox: setting home path '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90'
dropbox: setting python path '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90:/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/python-packages-35.zip'
dropbox: python initialized
dropbox: running dropbox
dropbox: setting args
dropbox: applying overrides
dropbox: running main script
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/cryptography.hazmat.bindings._constant_time.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/cryptography.hazmat.bindings._openssl.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/cryptography.hazmat.bindings._padding.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/psutil._psutil_linux.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/psutil._psutil_posix.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/linuxffi.pthread._linuxffi_pthread.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/linuxffi.fcntl._linuxffi_fcntl.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/linuxffi.sys.compiled._linuxffi_sys.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/tornado.speedups.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/cpuid.compiled._cpuid.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/linuxffi.resolv.compiled._linuxffi_resolv.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/posixffi.libc._posixffi_libc.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/librsyncffi.compiled._librsyncffi.cpython-35m-x86_64-linux-gnu.so'
Dropbox isn't running!
Done!
juanjo@Vant:~$ dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/PyQt5.QtWebKit.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/PyQt5.QtCore.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/PyQt5.QtNetwork.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/PyQt5.QtGui.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/PyQt5.QtWebKitWidgets.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/PyQt5.QtWidgets.cpython-35m-x86_64-linux-gnu.so'
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/PyQt5.QtPrintSupport.cpython-35m-x86_64-linux-gnu.so'
Gtk-Message: 08:08:29.883: Failed to load module "topmenu-gtk-module"
dropbox: load fq extension '/var/lib/dropbox/.dropbox-dist/dropbox-lnx.x86_64-54.4.90/PyQt5.QtDBus.cpython-35m-x86_64-linux-gnu.so'
(dropbox:4493): GLib-GObject-WARNING **: 08:08:29.983: cannot register existing type 'GdkDisplayManager'
(dropbox:4493): GLib-CRITICAL **: 08:08:29.983: g_once_init_leave: assertion 'result != 0' failed
(dropbox:4493): GLib-GObject-CRITICAL **: 08:08:29.983: g_object_new_with_properties: assertion 'G_TYPE_IS_OBJECT (object_type)' failed
