This time I hopefully found how to NOT initialize this variable, and not load it from file either ....

Try this patch instead of any my previous attempts ... sorry!

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diff --git a/cinelerra-5.1/cinelerra/batchrender.C b/cinelerra-5.1/cinelerra/batchrender.C
index 6dcdbc62..f9a91fff 100644
--- a/cinelerra-5.1/cinelerra/batchrender.C
+++ b/cinelerra-5.1/cinelerra/batchrender.C
@@ -60,6 +60,8 @@
 #include "dvdcreate.h"
 #include "bdcreate.h"

+#define UNSAFE_BUTTON 0
+
 int BatchRenderThread::column_widths[] = { 42, 42, 42, 222, 222, 150 };
 const char *BatchRenderThread::column_titles[] = {
        N_("Enabled"), N_("Labeled"), N_("Farmed"), N_("Output"), N_("EDL"), N_("Elapsed")
@@ -197,7 +199,10 @@ BatchRenderThread::BatchRenderThread(MWindow *mwindow)
        default_job = 0;
        boot_defaults = 0;
        preferences = 0;
+       
+       if (UNSAFE_BUTTON)
        warn = 1;
+
        render = 0;
        batch_path[0] = 0;
        do_farmed = 0;
@@ -217,6 +222,7 @@ void BatchRenderThread::reset(const char *path)
 {
        if( path ) {
                strcpy(batch_path, path);
+               if (UNSAFE_BUTTON)
                warn = 1;
        }
        current_job = 0;
@@ -268,6 +274,7 @@ void BatchRenderThread::load_jobs(char *path, Preferences *preferences)
        while( !result ) {
                if( !(result = file.read_tag()) ) {
                        if( file.tag.title_is("JOBS") ) {
+                               if (UNSAFE_BUTTON)
                                warn = file.tag.get_property("WARN", 1);
                        }
                        else if( file.tag.title_is("JOB") ) {
@@ -293,6 +300,7 @@ void BatchRenderThread::save_jobs(char *path)
 {
        FileXML file;
        file.tag.set_title("JOBS");
+       if (UNSAFE_BUTTON)
        file.tag.set_property("WARN", warn);
        file.append_tag();
        file.append_newline();
@@ -382,6 +390,7 @@ void BatchRenderThread::use_current_edl()
        gui->edl_path_text->update(get_current_edl());
 }

+
 void BatchRenderThread::update_selected_edl()
 {
         FileXML xml_file;
@@ -792,8 +801,12 @@ void BatchRenderGUI::create_objects()
        y2 = y + edl_path_browse->get_h() + mwindow->theme->widget_border;

        x = x2;  y = y2;
+
+       if (UNSAFE_BUTTON) {
        add_subwindow(update_selected_edl = new BatchRenderUpdateEDL(thread, x, y));
        y += update_selected_edl->get_h() + mwindow->theme->widget_border;
+       }
+
        add_subwindow(use_current_edl = new BatchRenderCurrentEDL(thread, x, y));
        y += use_current_edl->get_h() + mwindow->theme->widget_border;
        if( !mwindow->edl || !mwindow->edl->path[0] ) use_current_edl->disable();
@@ -805,8 +818,12 @@ void BatchRenderGUI::create_objects()
        x += savelist_batch->get_w() + mwindow->theme->widget_border;
        add_subwindow(loadlist_batch = new BatchRenderLoadList(thread, x, y));
        y += loadlist_batch->get_h() + mwindow->theme->widget_border;
+
+       if (UNSAFE_BUTTON) {
        add_subwindow(warning = new BatchRenderWarning(thread, x2, y));
        y2 = y + warning->get_h() + mwindow->theme->widget_border;
+       }
+       
        if( y2 > y1 ) y1 = y2;
        x = mwindow->theme->batchrender_x1, y = y1;

@@ -835,6 +852,7 @@ void BatchRenderGUI::button_disable()
        new_batch->disable();
        delete_batch->disable();
        use_current_edl->disable();
+       if (UNSAFE_BUTTON)
        update_selected_edl->disable();
 }

@@ -844,6 +862,7 @@ void BatchRenderGUI::button_enable()
        delete_batch->enable();
        if( mwindow->edl && mwindow->edl->path[0] )
                use_current_edl->enable();
+       if (UNSAFE_BUTTON)
        update_selected_edl->enable();
 }

@@ -876,8 +895,12 @@ int BatchRenderGUI::resize_event(int w, int h)
        y2 = y + edl_path_browse->get_h() + mwindow->theme->widget_border;

        x = x2;  y = y2;
+
+       if (UNSAFE_BUTTON) {
        update_selected_edl->reposition_window(x, y);
        y += update_selected_edl->get_h() + mwindow->theme->widget_border;
+       }
+
        use_current_edl->reposition_window(x, y);
        y += use_current_edl->get_h() + mwindow->theme->widget_border;
        new_batch->reposition_window(x, y);
@@ -889,9 +912,12 @@ int BatchRenderGUI::resize_event(int w, int h)
        x += savelist_batch->get_w() + mwindow->theme->widget_border;
        loadlist_batch->reposition_window(x, y);
        y += loadlist_batch->get_h() + mwindow->theme->widget_border;
+       if (UNSAFE_BUTTON) {
        warning->reposition_window(x2, y);

        y1 = ys15 + BC_GenericButton::calculate_h() + mwindow->theme->widget_border;
+       }
+       
        y2 = get_h() - y1 - batch_list->get_h();
        y2 -= list_title->get_h() + mwindow->theme->widget_border;

@@ -1236,6 +1262,7 @@ int BatchRenderCurrentEDL::handle_event()
        return 1;
 }

+
 BatchRenderUpdateEDL::BatchRenderUpdateEDL(BatchRenderThread *thread,
        int x,
        int y)
@@ -1244,8 +1271,10 @@ BatchRenderUpdateEDL::BatchRenderUpdateEDL(BatchRenderThread *thread,
        this->thread = thread;
 }

+
 int BatchRenderUpdateEDL::handle_event()
 {
+       if (UNSAFE_BUTTON)
        thread->update_selected_edl();
        return 1;
 }
@@ -1374,6 +1403,7 @@ BatchRenderWarning::BatchRenderWarning(BatchRenderThread *thread, int x, int y)

 int BatchRenderWarning::handle_event()
 {
+       if (UNSAFE_BUTTON)
        thread->warn = get_value();
        return 1;
 }

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