Center within Src. I don't think you can nest the blocks.
The cryptic message is org-export.el way of saying that there is a parse
error or that the Org file doesn't to conform to schema.
> This throws an error:
>
> ------------------------------
> * headline 1
>
> #+BEGIN_CENTER
>
> #+BEGIN_SRC R :exports both
> rnorm(10)
> #+END_SRC
>
> #+END_CENTER
> ------------------------------
>
> M-: (org-export-to-buffer 'e-latex "latex buffer") RET
>
> It does not run the src block and the error is:
>
> (error "Invalid search bound (wrong side of point)")
> re-search-forward("@@[-A-Za-z0-9]+:" 31 t)
> [snip]
> org-element-export-snippet-successor(31)
> [rest deleted]
>
> Removing the whitespace between the BEGIN_CENTER and BEGIN_SRC lines
> runs, but wrongly fails to execute the src block.
>
> Removing the CENTER results in running the src block and producing the
> expected result.
>
> My last pull was yesterday: b7be665..69af091
>
> HTH,
>
> Chuck
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