Apps are only available at Microsoft Marketplace for Windows Mobile. To browse Marketplace, click the Marketplace logo, to download apps, you must use Marketplace client software on your mobile phone, you must login with your live ID.
You are not in Markerplace Singapore, or your home market is not Singapore. My apps are only available at Singapore Store and visible to IP or LiveID tied to Singapore. To verify this, check the right bottom of your browser, you should have "Singapore - English (Home)" shown as below.
"Singapore - English" means you are visiting Marketplace Singapore Store, "Home" means your home market is Singapore.
Make sure your phone's region setting is set to Singapore. Make sure your phone ROM is Windows Mobile 6.5+ Pro edition. My apps only work for ROM 6.5 and above.
Microsoft Marketplace mobile client checks your phone OS and it filters out un-matched apps, for example, if you are using Windows Mobile 6.1, you won't be able to get any Widgets or Apps designed for 6.5 from Marketplace.
If you are using cooked 6.5 ROM, you have half chance to get these apps, depending on whether or not the cooked ROM modifies OEM identifier in registry. For the case of Touch Pro 2, the registry key "HKLM\Software\OEM\ROMVersion" is used to store OEM identifier. Normally the cooks will change the value to something else, e.g. their ROM series names, while the value from official HTC ROM 6.5 is "1.86.707.4(67102)", which is authorized by Microsoft. That means, Marketplace will use this registry key to identify if the device is 6.5 Pro.
If you happen to install such cooked ROM, you may need to find the official OEM identifier from your phone maker, input into the cooked ROM registry, and do a soft reset; or ask the author of cooked ROM not to change this value, or refresh back to official ROM.
Check if the file "\Windows\wmwidgetinstaller.exe" exists.
If it does not exist, you are using a cooked ROM, it keeps OEM identifier but removes Widget Engine unlikely. Please contact the author to put back Widget Engine or simply choose another ROM.
If it does exist, you may need to re-register widget apps to Widget Engine, download the cab file and install.
First of all, widget app does NOT have any install/uninstall functions, widget app is simply zip file. Install, uninstall and upgrade are managed by Marketplace mobile client and Widget Engine, so it is not fair to blame me with a bad rating on Marketplace's review when such error happens -- Widget app has nothing to do with this kind of error.
Microsoft said, if you get the apps from Markerplace, you MUST uninstall/upgrade from Marketplace/My Apps too.
You can NOT, manually uninstall them from phone settings, or simply delete them from storage. Marketplace client has its own registry settings and database to record downloaded apps, an improper uninstallation may cause old records not deleted and prevent you reinstalling them again.
When such error happens, even the apps are removed already from outside of Marketplace, you may still want to remove the entry from Marketplace client/My Apps. If there is a duplicated icon, you can manually delete it from \Windows\Start Menu\Programs\, then try to re-install from Marketplace.
There are many known/reported issues in Marketplace, I am sure Microsoft will be able to improve its Store, that may take times, so just be a little bit patient.
Technically, yes they support because Widget Engine is shipped with ROM 6.5 Pro regardless of Smartphone or PPC. But you may not be able to find any widgets in Markerplace, this is because one app is only allowed to publish to one market at one time. HTC Snap is under Smartphone, while most of widgets are published to PPC market.
If you want to try my apps on your HTC Snap, drop me an email.
There are some known issues for widget apps on a non-touch device, cursor seems to be disabled within apps, you may want to try 3rd party cursor app (eg, iCursor) and work together with wodget apps.