You don't mention that you rebooted, so just try that first.  

cheers -ben

P.S. Quick summary for others, the error is...

    "no room in eden for allocateSmallNewSpaceSlots:format:classIndex:"

Top of Smalltalk stack dump:

0x7ffeec4c4a88 I ExternalSemaphoreTable class>unprotectedExternalObjects: 0x1d044b0: a(n) ExternalSemaphoreTable class

0x7ffeec4c4ad0 I [] in ExternalSemaphoreTable class>clearExternalObjects 0x1d044b0: a(n) ExternalSemaphoreTable class

0x7ffeec4c4b20 I [] in Semaphore>critical: 0x211ec80: a(n) Semaphore

0x7ffeec4c4b70 I BlockClosure>ensure: 0x165e2d0: a(n) BlockClosure

0x7ffeec4c4bc0 I Semaphore>critical: 0x211ec80: a(n) Semaphore

0x7ffeec4c4c08 I ExternalSemaphoreTable class>clearExternalObjects 0x1d044b0: a(n) ExternalSemaphoreTable class

0x7ffeec4c4c48 I SmalltalkImage>clearExternalObjects 0x1d0a920: a(n) SmalltalkImage

0x7ffeec4c4c88 I WorkingSession>start: 0x165e000: a(n) WorkingSession

0x7ffeec4c4ce0 I SessionManager>launchSnapshot:andQuit: 0x1d70a10: a(n) SessionManager     

0xbff6c50 s SessionManager>snapshot:andQuit:     

0xc006a18 s [] in SmalltalkImage>snapshot:andQuit:

On Thu, 13 Dec 2018 at 16:26, Trussardi Dario Romano <dario.trussardi@tiscali.it> wrote:

Ciao,

i have a Ubuntu system

  where i defined a Pharo 7.0 - 64bit image managed with PharoLauncher.

I work with it for a month and all work fine.

Now after a save the image the system begin unstabled.

When the mouse go on the windows summary bar ( at the bottom of the Pharo window ) the image go down.

The first time i can launch the same image from the PharoLauncher,

but after a new  image save ( the image go down ) i can't relaunch the image.

When i do the launch the pharoLauch shell report:

I have some important work in the image ( and i don't have a backup )

Some consideration?

Thanks,

Dario