# Moving scripts up from version 4 to version 8

**URL:** https://www.finalbuilder.com/forums/t/moving-scripts-up-from-version-4-to-version-8/2461
**Category:** Discussion
**Created:** [February 4, 2016, 3:01am UTC](https://www.finalbuilder.com/forums/t/moving-scripts-up-from-version-4-to-version-8/2461 "2016-02-04T03:01:04Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![melder](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/m/ee59a6/32.png) [@melder](https://www.finalbuilder.com/forums/u/melder)
#### Post date: [February 4, 2016, 3:01am UTC](https://www.finalbuilder.com/forums/t/moving-scripts-up-from-version-4-to-version-8/2461/1 "2016-02-04T03:01:04Z")

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Hi - what compatibility issues will we see moving from scripts created in FB4 to the latest? &nbsp;(yes, i know we should have done it a long time ago!) &nbsp;I mean can we just open the files and press build?  
  
Also would you recommend Windows 8.1 or Windows 10 for running FB?  
  
Thanks

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### Author: ![nevar](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/n/c4cdca/32.png) [@nevar](https://www.finalbuilder.com/forums/u/nevar)
#### Post date: [February 4, 2016, 10:19am UTC](https://www.finalbuilder.com/forums/t/moving-scripts-up-from-version-4-to-version-8/2461/2 "2016-02-04T10:19:16Z")

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Hi Mark,   
  
 We have built backwards compatibility into FinalBuilder since day one. You will be able to open your FinalBuilder 4 project in FinalBuilder 8. At this point the conversion to FinalBuilder 8 has occurred and you can save the file as a FinalBuilder 8 project. It is just that simple.   
  
 If you do have any issues, they are most like a bug so please let us know ASAP.   
  
 FinalBuilder 8 runs well on both Windows 8.1 and Windows 10. Please note however that it is recommended to run FinalBuilder as a user who allows elevation of privileges so that the “Run As” functionality on actions works.