# Carbonsoft GetFileSize and FB5
**URL:** https://www.finalbuilder.com/forums/t/carbonsoft-getfilesize-and-fb5/241
**Category:** Discussion
**Created:** [October 31, 2006, 7:05am UTC](https://www.finalbuilder.com/forums/t/carbonsoft-getfilesize-and-fb5/241 "2006-10-31T07:05:58Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@cwhalley](https://www.finalbuilder.com/forums/u/cwhalley)
#### Post date: [October 31, 2006, 7:05am UTC](https://www.finalbuilder.com/forums/t/carbonsoft-getfilesize-and-fb5/241/1 "2006-10-31T07:05:58Z")
When this is run (the latest one for FB4) you get "Error: Action does not implement IFBCustomAction interface!"
Is there a fix for this essential action please
Or alternatively a VBScript version which does the same thing please?
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### Author:  [@tate](https://www.finalbuilder.com/forums/u/tate)
#### Post date: [November 1, 2006, 6:01am UTC](https://www.finalbuilder.com/forums/t/carbonsoft-getfilesize-and-fb5/241/2 "2006-11-01T06:01:44Z")
Hi Carl,
I’m working on a new action to replace the Carbonsoft GetFileSize one… will post here when it’s ready.
.t8
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### Author:  [@tate](https://www.finalbuilder.com/forums/u/tate)
#### Post date: [November 1, 2006, 7:46am UTC](https://www.finalbuilder.com/forums/t/carbonsoft-getfilesize-and-fb5/241/3 "2006-11-01T07:46:05Z")
Try this build and let me know how the Get File Size action goes:
[https://www.finalbuilder.com/downloads/finalbuilder/500/FB500\_56.exe](https://www.finalbuilder.com/downloads/finalbuilder/500/FB500_56.exe)
it’s not backwards compatible with the Carbonsoft one, so you’ll have replace the old actions with the new one.
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### Author:  [@cwhalley](https://www.finalbuilder.com/forums/u/cwhalley)
#### Post date: [November 1, 2006, 10:27am UTC](https://www.finalbuilder.com/forums/t/carbonsoft-getfilesize-and-fb5/241/4 "2006-11-01T10:27:45Z")
Hey thanks! This looks excellent. I can’t test it in anger right now because of an outstanding D2006 build issue (Case 4761). I’ll report back when done - nice work, you got all the options needed in too!
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### Author:  [@tate](https://www.finalbuilder.com/forums/u/tate)
#### Post date: [November 2, 2006, 3:15am UTC](https://www.finalbuilder.com/forums/t/carbonsoft-getfilesize-and-fb5/241/5 "2006-11-02T03:15:28Z")
cool - let us know how you go when you get a chance to take a look.
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### Author:  [@cwhalley](https://www.finalbuilder.com/forums/u/cwhalley)
#### Post date: [November 4, 2006, 1:17am UTC](https://www.finalbuilder.com/forums/t/carbonsoft-getfilesize-and-fb5/241/6 "2006-11-04T01:17:27Z")
Well it works beautifully, and the Delphi build issue was fixed at the same time too - you guys rock! Sincere thanks.