[gena0411]

Hello,

I have installed the latest beta yesterday (before collections update) and everything worked fine.

Today, I have installed again to get collections support and there is a communication error.

I deleted everything to try from scratch but error remains.

==================
calibre, version 0.8.21
ERROR: Error: Error communicating with device

'NoneType' object is not subscriptable

Traceback (most recent call last):
File "site-packages\calibre\gui2\device.py", line 81, in run
File "site-packages\calibre\gui2\device.py", line 332, in _books
File "site-packages\calibre\devices\prst1\driver.py", line 142, in books
File "site-packages\calibre\devices\usbms\driver.py", line 242, in books
File "site-packages\calibre\devices\prst1\driver.py", line 200, in sync_booklists
File "site-packages\calibre\devices\prst1\driver.py", line 228, in update_device_database
File "site-packages\calibre\devices\prst1\driver.py", line 279, in update_device_books
File "site-packages\calibre\devices\prst1\driver.py", line 446, in upload_book_cover
TypeError: 'NoneType' object is not subscriptable
===========================

Could somebody help with this?

Thanks in advance
Genady