From ab241c4f3839f9d1ffeba95d2108ac7bc0ec4f88 Mon Sep 17 00:00:00 2001
From: Huw Jenkins <huw.jenkins@york.ac.uk>
Date: Wed, 27 Nov 2024 21:30:03 +0000
Subject: [PATCH 1/2] ctffind_runner: more informative error message when
 CTFFIND fails for every micrograph

---
 src/ctffind_runner.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/ctffind_runner.cpp b/src/ctffind_runner.cpp
index 9b7f1bc28..1ae1c3d67 100644
--- a/src/ctffind_runner.cpp
+++ b/src/ctffind_runner.cpp
@@ -460,6 +460,8 @@ void CtffindRunner::joinCtffindResults()
 
 		if (verb > 0 && imic % 60 == 0) progress_bar(imic);
 	}
+	if (MDctf.isEmpty())
+		REPORT_ERROR( (std::string) fn_ctffind_exe + " failed to estimate CTF parameters for any micrograph, exiting...");
 
     if (is_tomo)
     {

From db27b77a9e4042dbfa96ba5704829dec89a62d1f Mon Sep 17 00:00:00 2001
From: Huw Jenkins <huw.jenkins@york.ac.uk>
Date: Thu, 28 Nov 2024 15:36:40 +0000
Subject: [PATCH 2/2] Add LC_ALL=C to script used to call CTFFIND written by
 relion_run_ctffind

---
 src/ctffind_runner.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ctffind_runner.cpp b/src/ctffind_runner.cpp
index 1ae1c3d67..9f9c63f79 100644
--- a/src/ctffind_runner.cpp
+++ b/src/ctffind_runner.cpp
@@ -694,7 +694,7 @@ void CtffindRunner::executeCtffind4(long int imic)
 
 	// Write script to run ctffind
 	fh << "#!/usr/bin/env " << fn_shell << std::endl;
-	fh << fn_ctffind_exe << ctffind4_options << " > " << fn_log << " << EOF"<<std::endl;
+	fh << "env LC_ALL=C " << fn_ctffind_exe << ctffind4_options << " > " << fn_log << " << EOF"<<std::endl;
 	// line 1: input image
 	if (do_movie_thon_rings)
 	{