de la Mancha plugins are made using SynthEdit, so for this reason they can only be used on Windows based VST hosting systems. There are no plans to make Mac versions.
I test my plugins on as many hosts as possible, currently this includes Cubase, FL Studio, energyXT, Live Lite, Reaper, Renoise, Sonar and Podium
If you do spot a bug, please feel free to let me know about it.

All plugin and bundle purchases are handled through an automated web-shop using paypal as a payment method. Credit cards, debit cards and e-cheques are also accepted through the paypal system, so you can still pay even without a paypal account. Once your payment has cleared through paypal, you will immediately receive an automated e-mail with the download link to your purchased plugin or bundle. If you have not received one within a few minutes, please check your spam filters. In the event of a web-shop hiccup, if you still don't have anything, e-mail me and I will send you the links manually as soon as I can. If you pay by e-cheque, this can take 5-7 days for payment to clear, so you will not receive your link until after that time.

Most plugins have a EULA included in the manual or readme file. Some early freeware plugins did not, but please refer to the default EULA here where none is included in the download.

All the payware plugins have demo versions of the VST, so you can fully assess the plugin before you buy it. You are strongly encouraged to download the demo and try it on your system and all host software before purchase. The demo versions are usually restricted with bursts of silence and a splash screen.

All dlM plugins are installed by copying the contents of the downloaded zip or rar file into your VST directory. No installers are used, so you decide exactly where the files go. You must ensure the full contents of the zip or rar are extracted, maintaining any folder structure, as often additional folders and files are included which the plugin must access to function. Uninstalling is done by simply deleting the files and folder that was installed. No files are written to the registry. If you have any problems with installation, please let me know about it and I will try to assist

The plugins are developed using SynthEdit software version 1.016
There is a known bug with this version of SynthEdit that affects some multicore processors, although it isn't widely documented. Some users with multicore processors and certain hosts have reported issues when trying to load multiple instances of the same SynthEdit plugin. This bug is not reproducable on all systems or hosts, and may not occur on your system. If you have a multicore processor you are strongly urged to fully test the demo version of any plugin on your system before purchasing.
This bug does NOT affect single core processors or single instances of a plugin
This bug only seems to apply in hosts with multi-core support
It is intended that SynthEdit 1.1 will fix this bug, but there is no planned release date. There is no guarantee that any plugin can be updated on release of SE 1.1, as the compatibility between the two versions is not certain.
If you do have issues with multiple instances, there is a potential workaround. By making several copies of plugin.dll (eg plugin_1.dll, plugin_2.dll, etc) in your VST directory, your host will see each one as a different plugin and be able load one instance of each

There was a compatibility issue with some dlM plugins and the first release of FL8 (8.0). This was due to a bug in the FL wrapper and Imageline released a fix patch, which was later incorporated into a beta release (8.0.2). Please make sure you have the latest release version of FL Studio to ensure compatibility