diff --git a/src/Mod/Sketcher/Gui/EditModeCoinManager.cpp b/src/Mod/Sketcher/Gui/EditModeCoinManager.cpp
index ee8c91a02a..f48f6a968d 100644
--- a/src/Mod/Sketcher/Gui/EditModeCoinManager.cpp
+++ b/src/Mod/Sketcher/Gui/EditModeCoinManager.cpp
@@ -313,27 +313,36 @@ void EditModeCoinManager::ParameterObserver::updateColor(SbColor &sbcolor, const
 
 void EditModeCoinManager::ParameterObserver::subscribeToParameters()
 {
-    ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/View");
-    hGrp->Attach(this);
+    try {
+        ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/View");
+        hGrp->Attach(this);
 
-    ParameterGrp::handle hGrpsk = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher/General");
-    hGrpsk->Attach(this);
-
-    ParameterGrp::handle hGrpskg = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher");
-    hGrpskg->Attach(this);
+        ParameterGrp::handle hGrpsk = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher/General");
+        hGrpsk->Attach(this);
 
+        ParameterGrp::handle hGrpskg = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher");
+        hGrpskg->Attach(this);
+    }
+    catch(const Base::ValueError & e) { // ensure that if parameter strings are not well-formed, the exception is not propagated
+        Base::Console().Error("EditModeCoinManager: Malformed parameter string: %s\n", e.what());
+    }
 }
 
 void EditModeCoinManager::ParameterObserver::unsubscribeToParameters()
 {
-    ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/View");
-    hGrp->Detach(this);
+    try {
+        ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/View");
+        hGrp->Detach(this);
 
-    ParameterGrp::handle hGrpsk = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher/General");
-    hGrpsk->Detach(this);
+        ParameterGrp::handle hGrpsk = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher/General");
+        hGrpsk->Detach(this);
 
-    ParameterGrp::handle hGrpskg = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher");
-    hGrpskg->Detach(this);
+        ParameterGrp::handle hGrpskg = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher");
+        hGrpskg->Detach(this);
+    }
+    catch(const Base::ValueError & e) {// ensure that if parameter strings are not well-formed, the program is not terminated when calling the noexcept destructor.
+        Base::Console().Error("EditModeCoinManager: Malformed parameter string: %s\n", e.what());
+    }
 }
 
 void EditModeCoinManager::ParameterObserver::OnChange(Base::Subject<const char*> &rCaller, const char * sReason)