ACSM - files opening/download failes; ADE - crashes aferwards

Hi,

I got the following problem when opening (adding to library) an *.acsm file with adobe digital editions (Version 4.5.3.162045) :

1. A window opens, telling me that the content will be downloaded (takes about 3-5 seconds),

2. A second window appears saying that download is impossible. Licence error, server communication failure. (E_ADEPT_DOCUMENT_TOO_SHORT)

3. After pressing the "OK" button, the ADE program crashes with the following Details (sorry it was done in German):

Problemsignatur:

  Problemereignisname:    BEX

  Anwendungsname:    DigitalEditions.exe

  Anwendungsversion:    4.5.3.0

  Anwendungszeitstempel:    5847eb3f

  Fehlermodulname:    StackHash_0a9e

  Fehlermodulversion:    0.0.0.0

  Fehlermodulzeitstempel:    00000000

  Ausnahmeoffset:    0202522e

  Ausnahmecode:    c0000005

  Ausnahmedaten:    00000008

  Betriebsystemversion:    6.1.7601.2.1.0.256.48

  Gebietsschema-ID:    3079

  Zusatzinformation 1:    0a9e

  Zusatzinformation 2:    0a9e372d3b4ad19135b953a78882e789

  Zusatzinformation 3:    0a9e

  Zusatzinformation 4:    0a9e372d3b4ad19135b953a78882e789

When I used the ADE this summer (June 2016), everything was fine. So now all my old scripts/books are not readable anymore 😕😕

The same prolem occurs on both Windows PCs (Windwos 7, Windows 8.1).

Would be very nice to get help, thanks. (I already reinstalled with cleaning the adept registry information, still the problem exists.)

PS.: case number: 0220828034 (from adobe support-chat)

Nachricht geändert durch Martin Prinz (added two images)