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Known Issues
WiiFlow has a issue when downloading covers. Mainly when downloading a large quantity. The problem is the cover 'png' images get downloaded and saved but some or all of them don't get converted to 'wfc' cache files that WiiFlow actually uses to display them on screen. The cause isn't totally known but it appears to be an issue with 'out of memory'. If it happens most likely you will need to exit wiiflow and reboot it.
This may also happen if you manually add a lot of covers for your emulator plugins when you boot WiiFlow and do 'reload cache'.
The easiest way to fix it is remove your SD card or USB device and connect it to your home PC. Download and use a program called WFC_conv by Wiimpathy. It's a Linux and Windows tool that will convert all the png images in a folder to wfc files for wiiflow.
Download it here - https://github.com/Wiimpathy/WFC_conv/releases/download/v0.1/WFC_conv_0-1.zip
Extract it and follow these directions to use it.
WFC_converter is a command line tool to convert images to WiiFlow cache files. It scans all covers found in 'boxcovers' and saves the .wfc files in the cache folder. Only png are supported with the same constraints as in WiiFlow(max height < 1090 for example).
You may consult the log file 'log_cachecreate.txt' for any errors during the cache creation. Refer to the Return codes in pngu.h to see what the error number means.
Usage:
Note: in Windows you will need to open a command prompt. In Windows 10 go to the Windows folder with wfc_conv.exe and hold shift while right clicking in open area (not on a file). select Open Powershell window here. Now you can type the following commands.
wfc_conv.exe Path [-OPTION]
#Path#
The path to the WiiFlow folder containing your boxcovers.
#OPTION#
-uncompress : Don't compress textures. Not recommended, files are large. It's disabled by default in WiiFlow.
-wiicovers : Create cache files for Wii and GameCube covers.
Examples :
wfc_conv.exe e:\WiiFlow
wfc_conv.exe e:\WiiFlow -wiicovers
For some users WiiFlow may show the splash screen and then exit or it may get stuck in endless wait animation.
This is most likely caused by your SD or USB device not working with the current cIOS or IOS 58. The next problem is WiiFlow uses a savegame on your wii just like all wii games do. This savegame contains settings for WiiFlow's boot up such as to use IOS 58 or a cIOS, which cIOS to use, and what port the USB device is attached to. WiiFlow makes this savegame on bootup if it's not found. It defaults to cIOS 249. It could be your device works better with IOS 58 or a different cIOS. Simply deleting this savegame does not solve this problem because it will just be recreated with the default of cIOS 249.
You need to use WiiFlow Startup Configurator. A Wii app to edit this savegame by choosing to use IOS 58 or a different cIOS.
Download here - https://www.mediafire.com/file/vdchnzz8nh587g1/Wiiflow_Start_Configurator.zip/file
Run it via The Homebrew Channel, make your changes, exit it, and try to run WiiFlow again.
Note: vWii users may find more success with a cIOS of base 58 or 57.