PDOException: SQLSTATE[42S02]: Base table or view not found
I just had the same similar situation happen just today.  I'm not sure if you resolved your issue, but in case you or others have the problem again, there's a simple solution that worked for me.

I'll post it here, but please go to this link (https://www.drupal.org/node/2417855) as a reference to my situation... thanks!


  This is the error message I was getting PDOException: SQLSTATE[42S02]:
  Base table or view not found: 1146 Table 'dbxxx.xxxfile_metadata'
  doesn't exist: SELECT * FROM {file_metadata} WHERE fid IN (:fids_0);
  Array ( [:fids_0] => 38 ) in file_entity_file_load() (line 201 of
  /sites/all/modules/file_entity/file_entity.file.inc)


Here's what I did:


  UPDATE
  
  I did my own recon work ... somehow, I was able to get out of the
  situation and the error message disappeared. I am either very
  resourceful or EXTREMELY lucky!! lol
  
  Here's what I did before the error message ... I Installed and enabled
  the following modules:
  
  Media and File_Entity ... then the error showed up and froze me I then
  tried to disable, but it wouldn't let me. Here's what I did AFTER the
  error message to fix the problem:
  
  I went directly to the database and disabled the two modules within
  then I ran the "update.php" from my site It then processed the
  "file_entity" module All is good now I'm guessing the module did not
  upload properly ... I don't know, but I'm back online again... whew =)


I hope this helps =)