Terminal has a hissy fit when starting .icedove -ProgramManager

Here's the harangue that ensues, even though icedove starts and runs from the GUI OK:

amenex:~/.icedove$ icedove -ProgramManager

(process:2541): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

(icedove:2541): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect after class was initialised

(icedove:2541): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog after class was initialised

(icedove:2541): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display after class was initialised

(icedove:2541): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon after class was initialised

(process:2541): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

(icedove:2541): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect after class was initialised

(icedove:2541): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog after class was initialised

(icedove:2541): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display after class was initialised

(icedove:2541): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon after class was initialised
Warning: unrecognized command line flag -ProgramManager
``` EXCEPTION DURING NOTIFY: undefined:522: [Exception... "Component returned failure code: 0x80550005 [nsIMsgFolder.msgDatabase]" nsresult: "0x80550005 ()" location: "JS frame :: chrome://messenger/content/folderDisplay.js :: FolderDisplayWidget__getDefaultColumnsForCurrentFolder :: line 522" data: no]
``` EXCEPTION DURING NOTIFY: undefined:522: [Exception... "Component returned failure code: 0x80550005 [nsIMsgFolder.msgDatabase]" nsresult: "0x80550005 ()" location: "JS frame :: chrome://messenger/content/folderDisplay.js :: FolderDisplayWidget__getDefaultColumnsForCurrentFolder :: line 522" data: no]

I'm running Trisquel 7 on a Lenovo T420 with 4GB of RAM.