On Sunday, September 2, 2018 at 10:41:30 AM UTC-7, Massimo Di Pierro wrote:
>
> It is probably a permission issue and the web server do not have write 
> permission in your app folder.
>

If it was "working last night",  I would be wondering what changed the 
permissions. web2py Restoring backups is the first thing that comes to mind.

On the other hand, I've had various problems with Chrome and a local web2py 
instance that seem to be related to problems with Chrome's cache.  [I 
forget where I found the clue, perhaps on StackOverflow].   My symptoms are 
usually slow access, the "waiting for cache" message on the status line, 
the activity graph on the web2py launch gui looking like a thrashed disk 
chart, and a couple of other things I can't remember.  I haven't tied the 
IDE "communication error" to that (maybe from not seeing it often enough 
since getting the clue), but I would suspect it.   The fix seems to be 
close the Chrome window that's accessing web2py, and restart it (seems to 
be okay to leave other Chrome windows open).  Using the browser's "advanced 
features" clear cache option doesn't seem to be effective.  I have not 
tried closing just the web2py page(s) (that window usually has about 15 
web2py windows open, because I use 4+ projects at home).

Since the home machine is a laptop, I can also get the "communication 
error" message when I run out of space. (Lots of things give disgruntled 
messages when I do that.)  I then start moving things over to USB hard 
drives.

HTH

Dave S
/dps


> On Friday, 31 August 2018 12:41:05 UTC-7, Carlos Zenteno wrote:
>>
>> When editing app source from web interface there is a problem while 
>> saving ...I'm getting 'Last saved on: communication error' and nothing 
>> saved ... 
>> tried several times and even re-installed simplejson
>>
>> No luck
>>
>> it was working perfect last night and this morning this happened.
>>
>> Help !!
>>
>> USING
>> Version 
>>
>> 2.17.1-stable+timestamp.2018.08.06.01.02.56
>> (Running on Rocket 1.2.6, Python 2.7.14) 
>>
>

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