E: dpkg was interrupted, you must manually run 'dpkg --configure -a' to correct the problem. E: _cache->open() failed, please report. r

Have you tried doing what the error message suggests and running the dpkg command? Type the following at the command line :

sudo dpkg --configure -a

Enter your password when prompted. Then try :

sudo apt-get update

followed by

sudo apt-get upgrade

If you've already tried this or you try it now and it isn't working then post the full output from apt-get here.

What package was being installed when apt-get failed? You should be able to see this in the output just prior to the error message you've shown.

plese can tell me the whole thing how to precess where i am goi to click and all of that i'm just using ubuntu just for my curiosity

mario a tryed to go to application-accessories -terminal and a type what u said but still wantr let me to type my password

You are not able to type in your password? Could you please copy and paste your terminal output here, so i can see what you are doing?

Btw, are you sure that your question is related to GScrot (Screenshot Tool)?

You are not able to type in your password? Could you please copy and paste your terminal output here, so i can see what you are doing?

Btw, are you sure that your question is related to GScrot (Screenshot Tool)?

iswamo@iswamo:~$ sudo dpkg --configure -a
[sudo] password for iswamo:
Sorry, try again.
[sudo] password for iswamo:
see that all i have mario it wont let me type in my password

thank you mario

Thanks Mario Kemper (Romario), that solved my question.