TB v6.007 crashes upon 2nd running under Windows 7 Professional 64 bit

spamcollector

True BASIC has been running just fine on Windows 7 Professional 64 bit. Now it crashes. I can run a program (even really simple program: let a = 1; print a; end). It runs fine the first time. The next time, a compile error popup appears. Closing that popup results in a scintillating screen flashing "compile errors" at the bottom.

I've removed TB and reinstalled it to no avail. It was originally in Program Files (X86). I moved it to Program Files (as Anne at TB suggested). Same problem. Running as administrator doesn't help.

I copied the TB Silver v6.0007 from my Windows XP machine in my lab to a thumb drive, and replaced the Windows 7 copy with this copy (per Anne's suggestion, since the TB install stands alone). Same problem.

If I run TB from the thumb drive copy, it works fine.

It runs fine under Windows 7 in safe mode.

I suspect some other program is colliding with it. I have loaded no new programs except for Thunderbird, Firefox, and mail washer upgrades.

Any suggestions?

spamcollector

I should also add that previously compiled programs run just fine under Windows 7

spamcollector

If I run the older version of True Basic Silver via the file compiled file: 'TBLOADER', under the present True BASIC v6 list of files, it opens and runs without problem (multiple times) The user interface is the older version with multiple windows. The version number is not specified under 'Help for True BASIC, About True BASIC'. Also, under v5.5, the file executable file TBSILVER presents the same multiple window interface, and runs programs flawlessly.

xbones

Maybe your "simple program" is still runnming.

TB 6.0 sometimes fails to stop running programs properly -- the window is closed but that's all.. The next time you run the program, it can't be compiled because the program file is locked.

Use Task Manager to see if your program is still running in the background.

spamcollector

Xbones,

Thank you for the reply. Our minds think alike. Yes, I checked Task Manager, and one did find TB6 still running. That symptom is generally not the case.

Anne, at TB help, says the reason the TB6 popup "failed to compile" error message pops up is TB can't write back to the hard drive (SSD hard drive in my case).

As I write this response, it occurs to me that with a SSD, disk access is much quicker, and the operating system doesn't have to wait for a particular sector to spin under the read head. The thumb drive also doesn't have to wait but it is on a much slower USB 2.0 interface.

It doesn't matter whether I have simple 3-line program as detailed in my original message, or a much more complicated program (one that simulates the orbits of 39 major bodies of the solar system to 16-digit accuracy). This program uses 4th-order Runge-Kutta to numerically solve the 2nd order differential equations of motion. Matrix arithmetic is used to allow the scaler Runge-Kutta routine to handle any number of bodies.

I have run simulations with 500 random bodies (velocities, and masses) without problem. It is intriguing to watch them orbit each other, sometimes flinging out a body (r binary pair).

Anne are you reading this response?