@reflect_ Ignore what I have written after "probably work" for the moment.
Change the name of "sampler.pd" to "mysampler.pd" (no spaces in the name)......
And in your script of course....
That will probably work.

The error: sampler: can't load abstraction within itself....... suggests the patch is broken. Will it run on another machine?
Maybe you created sampler.pd, and within it you put "sampler 1" "sampler 2" etc. which would all be read as sampler with arguments 1, 2, etc.
If so you need to change their names to [sampler_1] or [sampler1] etc.
If you cannot open the patch then you can change its name to sampler.txt and edit it in a simple text editor.....
If you don't manage it then upload it on the forum and someone will fix it for you.
David.

Another reason for the error can be if you use [declare] inside sampler.pd with a path that contains sampler.pd. This should be avoided.

@reflect_ What is the parent patch called....?
David.