error message 135, cannot read

Recently acquired Acrobat XI that came with a scanner. Previously had version 9 and no problems with it. Several acrobat docs sent to me by email. Out of the 4 docs, the one that was previously printed out, scanned and converted to acrobat, no problem. The other 3 which are originals, when I open the file and attempt to scroll thru it, get error message 135-- cannot read document. This prevents saving the document or doing anything else with it other than seeing it on the screen. I found a suggestion on the forum, but cannot find the parameters that should be changed. Downloaded Soda PDF and it does not have any problem with the files. Also someone else did not have any problem with it. Don't know what version they used but probably an older one. Any suggestions appreciated.


Joe Milkes


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