Adobe reader file already in use....its not.

It blows my mind that Adobe gets away with releasing such crap software. As a long time Creative suite user (mainly Premiere) I ditched Adobe for video work due to the constant crashing and zero useful support.

Now, acrobat makes it almost impossible to just sign a document.

Seriously, who are the software engineers at Adobe? I can find dozens of faults in each Adobe software package I use wihin minutes of use.

I get the error message that

"There was an error opening this document. Acrobat cannot open this file because a task is still active in Acrobat. Please return to Acrobat and end the task before opening this file."

But it's not open anywhere!