Thanks. I believe, the following patch shall cure it:
--8<---------------cut here---------------start------------->8---
--- a/lisp/ob-core.el
+++ b/lisp/ob-core.el
@@ -2735,8 +2735,12 @@
value of `temporary-file-directory' temporarily set to the value
of `org-babel-temporary-directory'."
(if (file-remote-p default-directory)
(let ((prefix
+ ;; We cannot use `temporary-file-directory' as local part
+ ;; on the remote host, because it might be another OS
+ ;; there. So we assume "/tmp", which ought to exist on
+ ;; relevant architectures.
(concat (file-remote-p default-directory)
- (expand-file-name prefix temporary-file-directory))))
+ (expand-file-name prefix "/tmp/"))))
(make-temp-file prefix nil suffix))
(let ((temporary-file-directory
(or (and (boundp 'org-babel-temporary-directory)
--8<---------------cut here---------------end--------------->8---
Could you, please, test?
> Thanks,
> Alex
Best regards, Michael.