JeffH

Thank you!

Here's one of the files. 733_FUSE_T.zip

Some of the files in question are from Flight Simulator X (Steam Edition), so, those ones aren't ones I've saved. Also, I checked with the "Whats-it" tool you mentioned, and it says they're saved with the correct extension of .bmp. File still won't open, and shows the error code that I pasted originally.

This is the error code I get with DDS, PDN, BMP, PNG, and JPG files, but mostly with BMPs. Application version: paint.net 4.2.8 PaintDotNet.Imaging.UnknownImageFormatException (0x88982F07): D:\src\pdn\src\SystemLayer.Native\Imaging\WICImagingFactory.cpp (902) : hr = m_pImagingFactory->CreateDecoderFromStream( spStream, preferredVendor.HasValue ? &NativeConversions::ToNative(preferredVendor.Value.Guid) : 0, static_cast<WICDecodeOptions>(metadataOptions), &spDecoder); at PaintDotNet.Interop.InteropErrorInfo.ThrowIfError() in D:\src\pdn\src\Base\Interop\InteropErrorInfo.cs:line 98 at PaintDotNet.SystemLayer.Native.x64.NativeUtilities.ThrowOnErrorImpl(Int32 hr, SByte* szHr, IUnknown* pFxErrorInfo) at PaintDotNet.SystemLayer.Native.x64.Imaging.WICImagingFactory.CreateDecoderFromStream(Stream stream, BitmapDecodeOptions metadataOptions, Nullable`1 containerFormat, Nullable`1 preferredVendor) at PaintDotNet.Data.WicFileTypeHelpers.Load(Stream input, Nullable`1 forcedContainerFormat, Nullable`1 preferredVendor, MetadataTranscoder metadataTranscoder) in D:\src\pdn\src\PaintDotNet\Data\WicFileTypeHelpers.cs:line 61 at PaintDotNet.Data.BmpFileType.OnLoad(Stream input) in D:\src\pdn\src\PaintDotNet\Data\BmpFileType.cs:line 99 at PaintDotNet.FileType.Load(Stream input) in D:\src\pdn\src\Data\FileType.cs:line 512 at PaintDotNet.Functional.Func.Eval[T1,TRet](Func`2 f, T1 arg1) in D:\src\pdn\src\Base\Functional\Func.cs:line 158 The file is an aircraft skin from Flight Simulator X (Steam Edition), and the skin turns up fine in-game. I have also tried multiple BMP, DDS, PNG, PDN, and JPG files that I have previously been able to open with Paint.Net.