diff --git a/Common/LogManager.cpp b/Common/LogManager.cpp
index 64da7ff032..62174d3d31 100644
--- a/Common/LogManager.cpp
+++ b/Common/LogManager.cpp
@@ -159,7 +159,7 @@ void LogManager::Log(LogTypes::LOG_LEVELS level, LogTypes::LOG_TYPE type, const
 	static const char level_to_char[7] = "-NEWID";
 	char formattedTime[13];
 	Common::Timer::GetTimeFormatted(formattedTime);
-	sprintf(msg, "%s %s:%u %c[%s]: %s\n",
+	sprintf(msg, "%s %s:%d %c[%s]: %s\n",
 		formattedTime,
 		file, line, level_to_char[(int)level],
 		log->GetShortName(), temp);
diff --git a/Core/HLE/sceKernelMbx.cpp b/Core/HLE/sceKernelMbx.cpp
index ae0cab10cd..5eebea0387 100644
--- a/Core/HLE/sceKernelMbx.cpp
+++ b/Core/HLE/sceKernelMbx.cpp
@@ -410,7 +410,7 @@ int sceKernelSendMbx(SceUID id, u32 packetAddr)
 
 int sceKernelReceiveMbx(SceUID id, u32 packetAddrPtr, u32 timeoutPtr)
 {
-	u32 error;
+	u32 error=0;
 	Mbx *m = kernelObjects.Get<Mbx>(id, error);
 
 	if (!m)
@@ -437,7 +437,7 @@ int sceKernelReceiveMbx(SceUID id, u32 packetAddrPtr, u32 timeoutPtr)
 
 int sceKernelReceiveMbxCB(SceUID id, u32 packetAddrPtr, u32 timeoutPtr)
 {
-	u32 error;
+	u32 error=0;
 	Mbx *m = kernelObjects.Get<Mbx>(id, error);
 
 	if (!m)
@@ -465,7 +465,7 @@ int sceKernelReceiveMbxCB(SceUID id, u32 packetAddrPtr, u32 timeoutPtr)
 
 int sceKernelPollMbx(SceUID id, u32 packetAddrPtr)
 {
-	u32 error;
+	u32 error=0;
 	Mbx *m = kernelObjects.Get<Mbx>(id, error);
 
 	if (!m)
@@ -488,7 +488,7 @@ int sceKernelPollMbx(SceUID id, u32 packetAddrPtr)
 
 int sceKernelCancelReceiveMbx(SceUID id, u32 numWaitingThreadsAddr)
 {
-	u32 error;
+	u32 error=0;
 	Mbx *m = kernelObjects.Get<Mbx>(id, error);
 
 	if (!m)
@@ -515,7 +515,7 @@ int sceKernelCancelReceiveMbx(SceUID id, u32 numWaitingThreadsAddr)
 
 int sceKernelReferMbxStatus(SceUID id, u32 infoAddr)
 {
-	u32 error;
+	u32 error=0;
 	Mbx *m = kernelObjects.Get<Mbx>(id, error);
 	if (!m)
 	{
diff --git a/Core/HLE/sceKernelMemory.cpp b/Core/HLE/sceKernelMemory.cpp
index 5513850417..edd94ddb7c 100644
--- a/Core/HLE/sceKernelMemory.cpp
+++ b/Core/HLE/sceKernelMemory.cpp
@@ -167,7 +167,7 @@ void sceKernelCreateFpl()
 void sceKernelDeleteFpl()
 {
 	SceUID id = PARAM(0);
-	u32 error;
+	u32 error=0;
 	FPL *fpl = kernelObjects.Get<FPL>(id, error);
 	if (fpl)
 	{
@@ -184,7 +184,7 @@ void sceKernelDeleteFpl()
 void sceKernelAllocateFpl()
 {
 	SceUID id = PARAM(0);
-	u32 error;
+	u32 error=0;
 	FPL *fpl = kernelObjects.Get<FPL>(id, error);
 	if (fpl)
 	{
@@ -214,7 +214,7 @@ void sceKernelAllocateFpl()
 void sceKernelAllocateFplCB()
 {
 	SceUID id = PARAM(0);
-	u32 error;
+	u32 error=0;
 	FPL *fpl = kernelObjects.Get<FPL>(id, error);
 	if (fpl)
 	{
@@ -243,7 +243,7 @@ void sceKernelAllocateFplCB()
 void sceKernelTryAllocateFpl()
 {
 	SceUID id = PARAM(0);
-	u32 error;
+	u32 error=0;
 	FPL *fpl = kernelObjects.Get<FPL>(id, error);
 	if (fpl)
 	{
@@ -272,7 +272,7 @@ void sceKernelFreeFpl()
 	u32 blockAddr = PARAM(1);
 
 	DEBUG_LOG(HLE,"sceKernelFreeFpl(%i, %08x)", id, blockAddr);
-	u32 error;
+	u32 error=0;
 	FPL *fpl = kernelObjects.Get<FPL>(id, error);
 	if (fpl) {
 		int blockNum = (blockAddr - fpl->address) / fpl->nf.blocksize;
@@ -295,7 +295,7 @@ void sceKernelCancelFpl()
 {
 	SceUID id = PARAM(0);
 	DEBUG_LOG(HLE,"UNIMPL: sceKernelCancelFpl(%i)", id);
-	u32 error;
+	u32 error=0;
 	FPL *fpl = kernelObjects.Get<FPL>(id, error);
 	if (fpl)
 	{
@@ -312,7 +312,7 @@ void sceKernelReferFplStatus()
 	SceUID id = PARAM(0);
 	u32 statusAddr = PARAM(1);
 	DEBUG_LOG(HLE,"sceKernelReferFplStatus(%i, %08x)", id, statusAddr);
-	u32 error;
+	u32 error=0;
 	FPL *fpl = kernelObjects.Get<FPL>(id, error);
 	if (fpl)
 	{
@@ -415,7 +415,7 @@ void sceKernelGetBlockHeadAddr()
 {
 	SceUID id = PARAM(0);
 
-	u32 error;
+	u32 error=0;
 	PartitionMemoryBlock *block = kernelObjects.Get<PartitionMemoryBlock>(id, error);
 	if (block)
 	{
@@ -480,7 +480,7 @@ void sceKernelDeleteVpl()
 {
 	SceUID id = PARAM(0);
 	DEBUG_LOG(HLE,"sceKernelDeleteVpl(%i)", id);
-	u32 error;
+	u32 error=0;
 	VPL *vpl = kernelObjects.Get<VPL>(id, error);
 	if (vpl)
 	{
@@ -498,7 +498,7 @@ void sceKernelAllocateVpl()
 {
 	SceUID id = PARAM(0);
 	DEBUG_LOG(HLE,"sceKernelAllocateVpl()");
-	u32 error;
+	u32 error=0;
 	VPL *vpl = kernelObjects.Get<VPL>(id, error);
 	if (vpl)
 	{
@@ -527,7 +527,7 @@ void sceKernelAllocateVpl()
 void sceKernelAllocateVplCB()
 {
 	SceUID id = PARAM(0);
-	u32 error;
+	u32 error=0;
 	VPL *vpl = kernelObjects.Get<VPL>(id, error);
 	if (vpl)
 	{
@@ -557,7 +557,7 @@ void sceKernelAllocateVplCB()
 void sceKernelTryAllocateVpl()
 {
 	SceUID id = PARAM(0);
-	u32 error;
+	u32 error=0;
 	VPL *vpl = kernelObjects.Get<VPL>(id, error);
 	if (vpl)
 	{
@@ -588,7 +588,7 @@ void sceKernelFreeVpl()
 	SceUID id = PARAM(0);
 	u32 blockPtr = PARAM(1);
 	DEBUG_LOG(HLE,"sceKernelFreeVpl(%i, %08x)", id, blockPtr);
-	u32 error;
+	u32 error=0;
 	VPL *vpl = kernelObjects.Get<VPL>(id, error);
 	if (vpl)
 	{
@@ -614,7 +614,7 @@ void sceKernelCancelVpl()
 void sceKernelReferVplStatus()
 {
 	SceUID id = PARAM(0);
-	u32 error;
+	u32 error=0;
 	VPL *v = kernelObjects.Get<VPL>(id, error);
 	if (v)
 	{
diff --git a/Core/HLE/sceKernelModule.cpp b/Core/HLE/sceKernelModule.cpp
index 46305fe375..46ecd8cf70 100644
--- a/Core/HLE/sceKernelModule.cpp
+++ b/Core/HLE/sceKernelModule.cpp
@@ -497,7 +497,7 @@ void __KernelStartModule(Module *m, int args, const char *argp, SceKernelSMOptio
 
 u32 __KernelGetModuleGP(SceUID uid)
 {
-	u32 error;
+	u32 error=0;
 	Module *module = kernelObjects.Get<Module>(uid, error);
 	if (module)
 	{
diff --git a/Core/HLE/sceKernelMutex.cpp b/Core/HLE/sceKernelMutex.cpp
index e3d048e545..1a8f4b4a0e 100644
--- a/Core/HLE/sceKernelMutex.cpp
+++ b/Core/HLE/sceKernelMutex.cpp
@@ -256,7 +256,7 @@ bool __KernelUnlockMutexForThread(Mutex *mutex, SceUID threadID, u32 &error, int
 int sceKernelDeleteMutex(SceUID id)
 {
 	DEBUG_LOG(HLE,"sceKernelDeleteMutex(%i)", id);
-	u32 error;
+	u32 error=0;
 	Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
 	if (mutex)
 	{
@@ -409,7 +409,7 @@ void __KernelWaitMutex(Mutex *mutex, u32 timeoutPtr)
 int sceKernelLockMutex(SceUID id, int count, u32 timeoutPtr)
 {
 	DEBUG_LOG(HLE, "sceKernelLockMutex(%i, %i, %08x)", id, count, timeoutPtr);
-	u32 error;
+	u32 error=0;
 	Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
 
 	if (__KernelLockMutex(mutex, count, error))
@@ -431,7 +431,7 @@ int sceKernelLockMutex(SceUID id, int count, u32 timeoutPtr)
 int sceKernelLockMutexCB(SceUID id, int count, u32 timeoutPtr)
 {
 	DEBUG_LOG(HLE, "sceKernelLockMutexCB(%i, %i, %08x)", id, count, timeoutPtr);
-	u32 error;
+	u32 error=0;
 	Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
 
 	if (__KernelLockMutex(mutex, count, error))
@@ -456,7 +456,7 @@ int sceKernelLockMutexCB(SceUID id, int count, u32 timeoutPtr)
 int sceKernelTryLockMutex(SceUID id, int count)
 {
 	DEBUG_LOG(HLE, "sceKernelTryLockMutex(%i, %i)", id, count);
-	u32 error;
+	u32 error=0;
 	Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
 
 	if (__KernelLockMutex(mutex, count, error))
@@ -471,7 +471,7 @@ int sceKernelTryLockMutex(SceUID id, int count)
 int sceKernelUnlockMutex(SceUID id, int count)
 {
 	DEBUG_LOG(HLE, "sceKernelUnlockMutex(%i, %i)", id, count);
-	u32 error;
+	u32 error=0;
 	Mutex *mutex = kernelObjects.Get<Mutex>(id, error);
 
 	if (error)
@@ -581,7 +581,7 @@ int sceKernelDeleteLwMutex(u32 workareaPtr)
 	NativeLwMutexWorkarea workarea;
 	Memory::ReadStruct(workareaPtr, &workarea);
 
-	u32 error;
+	u32 error=0;
 	LwMutex *mutex = kernelObjects.Get<LwMutex>(workarea.uid, error);
 	if (mutex)
 	{