diff --git a/Common/Render/Text/draw_text_android.cpp b/Common/Render/Text/draw_text_android.cpp
index 2f55694c5a..b6ada98a94 100644
--- a/Common/Render/Text/draw_text_android.cpp
+++ b/Common/Render/Text/draw_text_android.cpp
@@ -77,6 +77,12 @@ std::string TextDrawerAndroid::NormalizeString(std::string str) {
 }
 
 void TextDrawerAndroid::MeasureString(const char *str, size_t len, float *w, float *h) {
+	if (!str) {
+		*w = 0.0;
+		*h = 0.0;
+		return;
+	}
+
 	CacheKey key{ std::string(str, len), fontHash_ };
 	TextMeasureEntry *entry;
 	auto iter = sizeCache_.find(key);
diff --git a/Core/FileSystems/BlockDevices.cpp b/Core/FileSystems/BlockDevices.cpp
index cf6bcc7602..298cd45b92 100644
--- a/Core/FileSystems/BlockDevices.cpp
+++ b/Core/FileSystems/BlockDevices.cpp
@@ -231,7 +231,7 @@ bool CISOFileBlockDevice::ReadBlock(int blockNumber, u8 *outPtr, bool uncached)
 	const u32 idx = index[frameNumber];
 	const u32 indexPos = idx & 0x7FFFFFFF;
 	const u32 nextIndexPos = index[frameNumber + 1] & 0x7FFFFFFF;
-	z_stream z;
+	z_stream z{};
 
 	const u64 compressedReadPos = (u64)indexPos << indexShift;
 	const u64 compressedReadEnd = (u64)nextIndexPos << indexShift;
@@ -311,10 +311,7 @@ bool CISOFileBlockDevice::ReadBlocks(u32 minBlock, int count, u8 *outPtr) {
 	const u32 afterLastIndexPos = index[lastFrameNumber + 1] & 0x7FFFFFFF;
 	const u64 totalReadEnd = (u64)afterLastIndexPos << indexShift;
 
-	z_stream z;
-	z.zalloc = Z_NULL;
-	z.zfree = Z_NULL;
-	z.opaque = Z_NULL;
+	z_stream z{};
 	if (inflateInit2(&z, -15) != Z_OK) {
 		ERROR_LOG(LOADER, "Unable to initialize inflate: %s\n", (z.msg) ? z.msg : "?");
 		return false;
diff --git a/Core/Reporting.cpp b/Core/Reporting.cpp
index 3ff8fecc44..adf72090b9 100644
--- a/Core/Reporting.cpp
+++ b/Core/Reporting.cpp
@@ -280,9 +280,11 @@ namespace Reporting
 			return false;
 
 		if (http.Resolve(serverHost, ServerPort())) {
-			http.Connect();
-			int result = http.POST(http::RequestParams(uri), data, mimeType, output, &progress);
-			http.Disconnect();
+			int result = -1;
+			if (http.Connect()) {
+				result = http.POST(http::RequestParams(uri), data, mimeType, output, &progress);
+				http.Disconnect();
+			}
 
 			return result >= 200 && result < 300;
 		} else {
diff --git a/Core/TextureReplacer.cpp b/Core/TextureReplacer.cpp
index 264c6deee9..5ca2488568 100644
--- a/Core/TextureReplacer.cpp
+++ b/Core/TextureReplacer.cpp
@@ -456,6 +456,11 @@ bool TextureReplacer::PopulateLevel(ReplacedTextureLevel &level) {
 	bool good = false;
 
 	FILE *fp = File::OpenCFile(level.file, "rb");
+	if (!fp) {
+		ERROR_LOG(G3D, "Error opening replacement texture file '%s'", level.file.c_str());
+		return false;
+	}
+
 	auto imageType = Identify(fp);
 	if (imageType == ReplacedImageType::ZIM) {
 		fseek(fp, 4, SEEK_SET);
diff --git a/GPU/Common/GPUStateUtils.cpp b/GPU/Common/GPUStateUtils.cpp
index db237940fb..bdade1ea2a 100644
--- a/GPU/Common/GPUStateUtils.cpp
+++ b/GPU/Common/GPUStateUtils.cpp
@@ -1089,9 +1089,12 @@ void ConvertBlendState(GenericBlendState &blendState, bool allowFramebufferRead,
 
 	case REPLACE_BLEND_BLUE_TO_ALPHA:
 		blueToAlpha = true;
+		blendState.enabled = gstate.isAlphaBlendEnabled();
+		// We'll later convert the color blend to blend in the alpha channel.
 		break;
 
 	case REPLACE_BLEND_COPY_FBO:
+		blendState.enabled = true;
 		blendState.applyFramebufferRead = true;
 		blendState.resetFramebufferRead = false;
 		blendState.replaceAlphaWithStencil = replaceAlphaWithStencil;
@@ -1099,16 +1102,17 @@ void ConvertBlendState(GenericBlendState &blendState, bool allowFramebufferRead,
 
 	case REPLACE_BLEND_PRE_SRC:
 	case REPLACE_BLEND_PRE_SRC_2X_ALPHA:
+		blendState.enabled = true;
 		usePreSrc = true;
 		break;
 
 	case REPLACE_BLEND_STANDARD:
 	case REPLACE_BLEND_2X_ALPHA:
 	case REPLACE_BLEND_2X_SRC:
+		blendState.enabled = true;
 		break;
 	}
 
-	blendState.enabled = true;
 	blendState.resetFramebufferRead = true;
 
 	const GEBlendMode blendFuncEq = gstate.getBlendEq();
diff --git a/assets/compat.ini b/assets/compat.ini
index 24f5ecbf0e..5562d4feb0 100644
--- a/assets/compat.ini
+++ b/assets/compat.ini
@@ -1102,6 +1102,7 @@ NPEH00029 = true
 ULUS10455 = true
 
 [BlueToAlpha]
+# Split/Second
 ULES01402 = true
 ULUS10513 = true
 ULJM05812 = true