diff --git a/Sources/Plasma/PubUtilLib/plPipeline/plPlates.cpp b/Sources/Plasma/PubUtilLib/plPipeline/plPlates.cpp
index 63f0009c..83fae06d 100644
--- a/Sources/Plasma/PubUtilLib/plPipeline/plPlates.cpp
+++ b/Sources/Plasma/PubUtilLib/plPipeline/plPlates.cpp
@@ -238,9 +238,9 @@ plMipmap    *plPlate::CreateMaterial( uint32_t width, uint32_t height, bool with
 //// CreateFromResource //////////////////////////////////////////////////////
 //  Creates a plate's material from a resource of the given name.
 
-void plPlate::CreateFromResource(const char *resName)
+void plPlate::CreateFromResource(const plString& resName)
 {
-    if (resName)
+    if (!resName.IsEmpty())
     {
         plMipmap* resTexture = new plMipmap;
         resTexture->CopyFrom(plClientResMgr::Instance().getResource(resName));
@@ -256,9 +256,9 @@ void plPlate::CreateFromResource(const char *resName)
     }
 }
 
-void plPlate::ReloadFromResource(const char *resName)
+void plPlate::ReloadFromResource(const plString& resName)
 {
-    if (resName)
+    if (!resName.IsEmpty())
     {
         fMipmap->CopyFrom(plClientResMgr::Instance().getResource(resName));
     }
diff --git a/Sources/Plasma/PubUtilLib/plPipeline/plPlates.h b/Sources/Plasma/PubUtilLib/plPipeline/plPlates.h
index 8513f0e7..dc993a4d 100644
--- a/Sources/Plasma/PubUtilLib/plPipeline/plPlates.h
+++ b/Sources/Plasma/PubUtilLib/plPipeline/plPlates.h
@@ -144,8 +144,8 @@ class plPlate
         void    SetSize( float width, float height, bool adjustByAspectRatio = false );
 
         plMipmap        *CreateMaterial( uint32_t width, uint32_t height, bool withAlpha, plMipmap* texture = NULL );
-        void            CreateFromResource( const char *resName );
-        void            ReloadFromResource( const char *resName );
+        void            CreateFromResource(const plString& resName);
+        void            ReloadFromResource(const plString& resName);
 };
 
 //// plGraphPlate Class Definition ///////////////////////////////////////////
diff --git a/Sources/Plasma/PubUtilLib/plProgressMgr/plProgressMgr.cpp b/Sources/Plasma/PubUtilLib/plProgressMgr/plProgressMgr.cpp
index a0af9574..beea394d 100644
--- a/Sources/Plasma/PubUtilLib/plProgressMgr/plProgressMgr.cpp
+++ b/Sources/Plasma/PubUtilLib/plProgressMgr/plProgressMgr.cpp
@@ -60,14 +60,14 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 //// plProgressMgr Functions /////////////////////////////////////////////////
 //////////////////////////////////////////////////////////////////////////////
 
-plProgressMgr   *plProgressMgr::fManager = nil;
+plProgressMgr* plProgressMgr::fManager = nullptr;
 
 #define LOADING_RES         "xLoading_Linking.%02d.png"
 #define LOADING_RES_COUNT   18
 
-char* plProgressMgr::fImageRotation[LOADING_RES_COUNT];
+plString plProgressMgr::fImageRotation[LOADING_RES_COUNT];
 
-const char* plProgressMgr::fStaticTextIDs[] = {
+const plString plProgressMgr::fStaticTextIDs[] = {
     "xLoading_Linking_Text.png",
     "xLoading_Updating_Text.png"
 };
@@ -76,30 +76,21 @@ const char* plProgressMgr::fStaticTextIDs[] = {
 
 plProgressMgr::plProgressMgr()
 {
-    fOperations = nil;
+    fOperations = nullptr;
     fManager = this;
-    fCallbackProc = nil;
+    fCallbackProc = nullptr;
     fCurrentStaticText = kNone;
 
     // Fill array with pre-computed loading frame IDs
     for (int i=0; i < LOADING_RES_COUNT; i++)
-    {
-        char* frameID = new char[128];
-        sprintf(frameID, LOADING_RES, i);
-        fImageRotation[i] = frameID;
-    }
+        fImageRotation[i] = plString::Format(LOADING_RES, i);
 }
 
 plProgressMgr::~plProgressMgr()
 {
-    for (int i=0; i < LOADING_RES_COUNT; i++)
-    {
-        delete[] fImageRotation[i];
-    }
-
-    while( fOperations != nil )
+    while (fOperations)
         delete fOperations;
-    fManager = nil;
+    fManager = nullptr;
 }
 
 //// RegisterOperation ///////////////////////////////////////////////////////
@@ -238,7 +229,7 @@ void    plProgressMgr::CancelAllOps( void )
     fCurrentStaticText = kNone;
 }
 
-char*   plProgressMgr::GetLoadingFrameID(int index)
+const plString plProgressMgr::GetLoadingFrameID(int index)
 {
     if (index < LOADING_RES_COUNT)
         return fImageRotation[index];
@@ -251,7 +242,7 @@ uint32_t plProgressMgr::NumLoadingFrames() const
     return LOADING_RES_COUNT;
 }
 
-const char*   plProgressMgr::GetStaticTextID(StaticText staticTextType)
+const plString plProgressMgr::GetStaticTextID(StaticText staticTextType)
 {
     return fStaticTextIDs[staticTextType];
 }
diff --git a/Sources/Plasma/PubUtilLib/plProgressMgr/plProgressMgr.h b/Sources/Plasma/PubUtilLib/plProgressMgr/plProgressMgr.h
index 7e3cfeac..903d07fb 100644
--- a/Sources/Plasma/PubUtilLib/plProgressMgr/plProgressMgr.h
+++ b/Sources/Plasma/PubUtilLib/plProgressMgr/plProgressMgr.h
@@ -201,9 +201,9 @@ class plProgressMgr
 
     private:
 
-        static plProgressMgr    *fManager;
-        static char*            fImageRotation[];
-        static const char*      fStaticTextIDs[];
+        static plProgressMgr*    fManager;
+        static plString          fImageRotation[];
+        static const plString    fStaticTextIDs[];
 
     protected:
 
@@ -235,9 +235,9 @@ class plProgressMgr
         virtual ~plProgressMgr();
 
         static plProgressMgr* GetInstance() { return fManager; }
-        static char* GetLoadingFrameID(int index);
+        static const plString GetLoadingFrameID(int index);
         uint32_t plProgressMgr::NumLoadingFrames() const;
-        static const char* GetStaticTextID(StaticText staticTextType);
+        static const plString GetStaticTextID(StaticText staticTextType);
 
         virtual void    Draw( plPipeline *p ) { }