On 3.0, the grabber outputs the following on the log. Seems there's a mixup in the code somewhere, and probably just triggered by the newer releases of twisted or cheetah.
I guess someone does something like (I'm not familiar with the exact function names):
request.transfer(filename)
request.finish()
That request.finish is wrong here...
AiO Screengrabber 8.3.0
Detected STB: Brcm7405
Grabbing 32bit Framebuffer ...
... Framebuffer-Size: 1280 x 720
Resizing Screenshot to 700 x 393 ...
Saving 24 bit /tmp/screenshot.jpg ...
... Done !
Unhandled Error
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/twisted/protocols/basic.py", line 564, in dataReceived
File "/usr/lib/python2.7/site-packages/twisted/web/http.py", line 1551, in lineReceived
File "/usr/lib/python2.7/site-packages/twisted/web/http.py", line 1618, in allContentReceived
File "/usr/lib/python2.7/site-packages/twisted/web/http.py", line 773, in requestReceived
--- <exception caught here> ---
File "/usr/lib/python2.7/site-packages/twisted/web/server.py", line 132, in process
File "/usr/lib/python2.7/site-packages/twisted/web/server.py", line 238, in render
File "/usr/lib/python2.7/site-packages/twisted/web/server.py", line 157, in write
File "/usr/lib/python2.7/site-packages/twisted/web/http.py", line 898, in write
exceptions.RuntimeError: Request.write called on a request after Request.finish was called.
Unhandled Error
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/twisted/python/log.py", line 84, in callWithLogger
File "/usr/lib/python2.7/site-packages/twisted/python/log.py", line 69, in callWithContext
File "/usr/lib/python2.7/site-packages/twisted/python/context.py", line 118, in callWithContext
File "/usr/lib/python2.7/site-packages/twisted/python/context.py", line 81, in callWithContext
--- <exception caught here> ---
File "/usr/lib/enigma2/python/e2reactor.py", line 181, in _doReadOrWrite
File "/usr/lib/python2.7/site-packages/twisted/internet/tcp.py", line 199, in doRead
File "/usr/lib/python2.7/site-packages/twisted/protocols/basic.py", line 564, in dataReceived
File "/usr/lib/python2.7/site-packages/twisted/web/http.py", line 1551, in lineReceived
File "/usr/lib/python2.7/site-packages/twisted/web/http.py", line 1618, in allContentReceived
File "/usr/lib/python2.7/site-packages/twisted/web/http.py", line 773, in requestReceived
File "/usr/lib/python2.7/site-packages/twisted/web/server.py", line 134, in process
File "/usr/lib/python2.7/site-packages/twisted/web/server.py", line 255, in processingFailed
File "/usr/lib/python2.7/site-packages/twisted/web/server.py", line 157, in write
File "/usr/lib/python2.7/site-packages/twisted/web/http.py", line 898, in write
exceptions.RuntimeError: Request.write called on a request after Request.finish was called.