Hello!
I was wondering if the Alternative Uses Task (Guilford, 1967) in the Millisecond test library (https://www.millisecond.com/download/library/alternativeusestask/) is also available for Inquisit 4? I am trying to adapt it from the Inquisit 5 code available in the library but an entirely different coding approach is required due to many of the functions used in Inquisit 5 being unrecognisable when I attempt to run them in Inquisit 4.

No, there is no Inquisit 4 version available. You indeed would have to take the Inquisit 5 version of the script and replace any Inquisit 5-specific syntax constructs with Inquisit 4-compatible equivalents (in so far as any exist). This shouldn't be particularly hard to do with this script.