This error can be easily solved by clearing the Android Play store cache and then re-downloading the DosBox Turbo app. You will not need to purchase it again, the Market remembers your purchases. Schaum Probability Pdf here. To clear the Android PLAY store cache, follow the steps below: 1) Tap menu/settings from the home screen. 2) Tap applications 3) Tap manage applications, and firstly uninstall the DosBox Turbo app that gives the error.

Download DOSBox for free. An Open Source DOS emulator to run old DOS games. DOSBox emulates a full x86 pc with sound and DOS. Its main use is to run old DOS games on. I get the message 'License Check failed. Most games that work on DosBox 0.74 will work just fine on DosBox Turbo. Please check the DosBox Compatability List. Reporting GPL violation of DOSBox source. The DOSBox Turbo dev is. The developer of DOSBox Turbo has included anti-copying code to check for a valid license.

4) Next find app Google Play Store (on older versions of Android, it is just called PLAY), tap it then clear data/cache. 5) Next restart the Google Play Store.

This is pretty ridiculous. GPL v2 states that a fee can only be charged to cover the cost of distributing copies of a program or derived works.

It costs nothing to distribute apps on Google Play, aside from the registration fee. The DOSBox Turbo dev is explicitly stating that he's charging a fee to cover the cost of development. Isn't this a GPL violation? GPL v2 also states that if GPLed source code is included in an application, the developer must release the source, which the DOSBot guy is flat-out refusing to do. I think that there is a case against this.

Have any of the devs seriously looked into going after these d-bags? Newbie Posts: 10 Joined: 2012-12-08 @ 17:31. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions. B) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License. Wouldn't this indicate that derived works can't be sold for profit?

There's an allowance for verbatim copies to be distributed for a fee, to cover the cost of distribution, but that doesn't have anything to do with the cost of development. As far as the DOSBot dev is concerned, that seems even more clear-cut. I get that he has to - that doesn't mean that he will. The DOSBot guy explicitly says that he won't release his source. I know that this isn't the first time someone has profited off of the DOSBox's devs' hard work. Doesn't make it any more okay, though. Does the fee allowance in GPL v2 provide for charging for time/effort?

Seems to me that it's about the cost of distributing the software, not the cost of developing it. If that's the case, then there technically should never be a fee to download DOSBox from the Google Play store, since it costs the dev nothing to distribute it via that medium. Newbie Posts: 10 Joined: 2012-12-08 @ 17:31.