Fixed errors that would cause crash on init without a prior s ave

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "plascad"
-version = "0.7.3"
+version = "0.7.4"
 edition = "2021"
 authors = ["David O'Connor <[email protected]>"]
 #description = "Tools for plasmid and primer design, PCR, and related."

src/gui/autocloning.rs

@@ -104,7 +104,7 @@ fn backbone_filters(filters: &mut BackboneFilters, ui: &mut Ui) {
 }
 
 pub fn autocloning_page(state: &mut State, ui: &mut Ui) {
-    ui.heading("Assisted cloning");
+    ui.heading("Assisted cloning (Work in progress)");
     ui.label("For a given insert, automatically select a backbone, and either restriction enzymes, or PCR primers to use\
     to clone the insert into the backbone.");
 

src/main.rs

@@ -503,7 +503,7 @@ impl Default for State {
             restriction_enzyme_lib: Default::default(),
             backbone_lib: Default::default(),
             reading_frame: Default::default(),
-            volatile: Default::default(),
+            volatile: vec![Default::default()],
             search_seq: Default::default(),
             backbone_selected: Default::default(),
             cloning_res_matched: Default::default(),
@@ -637,6 +637,10 @@ impl State {
 
     /// Identify restriction enzyme sites in the sequence.
     pub fn sync_re_sites(&mut self) {
+        if self.active >= self.volatile.len() {
+            eprintln!("Error: Volatile len too short for RE sync.");
+            return;
+        }
         self.volatile[self.active].restriction_enzyme_matches = Vec::new();
 
         self.volatile[self.active]