The Temporary file "FMS_***.fch could not be created (opening same file twice)

Discussion created by mrwatson-gbs on Jul 5, 2016
Latest reply on Sep 27, 2016 by TSGal

This is a similar problem to other entries...


The temporary file "FMS_***.fch could not be created

FM Pro Error Message: Temporary file cannot be created.

FMP15 Backward Relationship Error


…but maybe throws some new light on the problem.


We have just updated to FMP15 and have also come across the temp-file problem.


For us it occurs in the following situation:


  1. We installed FileMaker 15
  2. We duplicated the FileMaker Pro file within the "Applications/FileMaker Pro Advanced 15” folder:
    Screen Shot 2016-07-05 at 14.51.07.png
  3. We opened a hosted data base using the FileMaker Pro file
  4. We opened the SAME hosted data base using the FileMaker Pro Advanced file
  5. The error message appears immediately, even before the login dialog appears, which makes me think it has maybe nothing to do with “back references"
    Screen Shot 2016-07-05 at 11.29.07.png



(Note: Our FBA/Platinum license allows this multiple use of the filemaker client)


It is interesting to note that if you duplicate the FileMaker FOLDER instead of the app the error DOES NOT occur:

Screen Shot 2016-07-05 at 14.53.32.png




Its seems that FileMaker 15 has changed the calculation of the path for internal temporary files, such that different instances of the app WITHIN THE SAME PROGRAMME FOLDER resolve to the same temporary file path, thus causing the clash of paths.


I hope this helps resolve the problem.