Installation 
- Error "1607 unable to install InstallShield scripting runtime" occurs when installing Mathcad 15.0.
- Error “1308: Source file not found …" occurs while installing Mathcad 15.0.
- Error “1904.Module \mcformsr.ocx failed to register. HREASULT -2147220473" followed by number of oth...
- Error “MDAC 2.6 SP2 contains a set of helper classes used by Mathcad..” keeps prompting while instal...
- Error “Microsoft Visual C++ Runtime Library, Runtime Error! Program: C:\Program Files\Mathcad \Mathc...
- Platform Support and System Requirements for Mathcad 15.0.
Miscellaneous 
- *Frequently Asked Questions - Installation
- *Frequently Asked Questions - Licensing
- Activation Troubleshooting - Error “You have reached the maximum number of license files available f...
- Activation Troubleshooting - Error: "401: Unauthorized User".
- Activation Troubleshooting - Error: "407: proxy authentication required”.
- Activation Troubleshooting - Error: "503 Error: Server Unavailable”.
- Launching Mathcad 15.0 yields error "Mathcad application has stopped working".
- Launching Mathcad 15.0 yields error "Terminal server remote client not allowed", “FLEXnet Licensing ...
- Launching Mathcad 15.0 yields error “Failed to Launch Server Application”.
- Launching Mathcad 15.0 yields error “Future license file format or misspelling in License file”, “FL...
- Launching Mathcad 15.0 yields error “Invalid Host. The hostid of the system does not match the hosti...
- Launching Mathcad 15.0 yields error “Library not registered".
- Launching Mathcad 15.0 yields error “Microsoft Visual C++ Runtime Library, Runtime Error! Program: C...
- Launching Mathcad 15.0 yields “Unable to Create 12.0 Engine Factory” error.
- Mathcad Engineering Libraries are not displayed under #Help > #E-Books after upgrading to Mathcad 15...
- Mathcad displays specific Greek symbols as a square box.
- Mathcad does not display the 3D Plots on Windows Vista/Windows 7 Operating System.
- Mathcad does not launch when disconnected from network or from laptop docking station and reports an...