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Re: Blank screen at install: solutions.
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TOPIC: Re: Blank screen at install: solutions.

Re: Blank screen at install: solutions. 3 years, 5 months ago #74136

  • Posts:
  • Karma:
RE: your post in general thread (opening a new thread for your issue, to address it properly):

pmbx wrote:
Just subscribed to the docs to get 1.2RC2. Downloaded and unzipped the file.

I'm using J1.5.6. Tried to install the component. Entire page goes blank with the url pointing to the administrator/index.php page. Haven't enabled PHP errors, but the readme doesn't point to what to do in this case.

This is not an upgrade. Never got to the module installs.

Very disappointing, especially since I subscribed expected this to at least install. I think the subscription concept is now questionable in my mind after I was willing to give this a try. If I pay for something, even if it is a release candidate, I would expect installation to either not be an issue, or at least some documentation of what to do for this kind of installation error.

Maybe you have a solution that can restore my confidence?


I'm sorry to read that.

Well, first of all thanks for your support to the project .

To address your issue, CB 1.2 RC 2 installs fine on most servers (all those with reasonable capacity and correct settings).

Maybe you missed in last paragraphs of the README.TXT file, which are refered to from the last note of step 3) of the README step-by-step install instructions, you have the troubleshooting section:

IN CASE OF FAILED COMPONENT INSTALL:
- Blank screen: check error logs of your webserver, or enable PHP errors display.
Or try both fixes below blindly.

- Maximum Execution time reached:
On very slow servers, IF installation timeouts (not seen yet): you
can fix that as follows: Open file:
- joomla 1.0/mambo: administrator/index2.php
- joomla 1.5: administrator/index.php
and add line
set_time_limit( 240 );
right after the <? line, remove directories components/com_comprofiler
and administrator/components/com_comprofiler and re-install.

- Memory exhausted error (sometimes Error 500):
Joomla 1.5 with legacy ON and FTP layer ON on PHP 4.x may give error
Memory exhausted if memory limit is 8 Megabytes. In that case, simply
switch legacy plugin to OFF just for the CB 1.2 RC 2 installation, then
you can switch it back to ON if needed. Or add line (similarly as above):
ini_set( 'memory_limit', '16M' ); @ini_set( 'memory_limit', '32M' );


Hope that helps.

Please report back if one of the 2 solutions cured your problem or not.
Beat
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Re: Blank screen at install: solutions. 3 years, 5 months ago #74140

  • Posts:
  • Karma:
No, the timeout is not the issue. I did try that.

The problem is that when I hit the Install button after selecting the com_comprofiler.zip file, after a momentary pause, the entire page goes blank.

No directories are installed, and no error message is presented. Just a blank screen.

I had read the instructions in the readme for failed installs, but this result didn't match anything there.

In my experience, misconfigured install files are the only thing that causes a blank, errorless page after clicking the install button.

Post edited by: pmbx, at: 2008/09/12 17:17
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Re: Blank screen at install: solutions. 3 years, 5 months ago #74145

  • Posts:
  • Karma:
pmbx wrote:
No, the timeout is not the issue. I did try that.

The problem is that when I hit the Install button after selecting the com_comprofiler.zip file, after a momentary pause, the entire page goes blank.

No directories are installed, and no error message is presented. Just a blank screen.

I had read the instructions in the readme for failed installs, but this result didn't match anything there.

In my experience, misconfigured install files are the only thing that causes a blank, errorless page after clicking the install button.

Post edited by: pmbx, at: 2008/09/12 17:17


Not in my experience. That's one of the possible reasons.

Install files are fine tested by 100+ CB testers, and all doc subscribers, just they are not small, so systems with minimal memory or exec time can't take that...specially with the FTP layers of joomla 1.5 on.

So: Maybe not enough memory ?

(see 2nd hint of the README)

Did you try adding that memory_limit line ?

Did you check logs ?
What's in there ?

Did you turn PHP errors display on ?
What's the output ?
Beat
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Re: Blank screen at install: solutions. 3 years, 5 months ago #74149

  • Posts:
  • Karma:
Setting the memory limit to 32 megs did help (I didn't try the 16 meg setting). My system is a late model Mac G5 with OS X Server and plenty of memory so the hardware speed and capacities are not an issue.

Once I reset the limit, then I got the next page which indicated two errors, indicating the comprofiler folders were already in use in the administrator and components directories.

After deleting these, the install went normally. Now I'm off to install the modules and begin setup. Might be worth mentioning the blank screen issue in the readme file?

Thanks so much.

Ron
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Re: Blank screen at install: solutions. 3 years, 5 months ago #74151

  • Posts:
  • Karma:
Ok, glad this is sorted out

The memory limit issue quoted above is already in the README, under blank screen problem troubleshooting section, and refered from the step 3) where you install comprofiler.

As you missed it at first reading, we are open to your suggestion on how to better write it ...this is a community project, contributions welcome

(keeping in mind this happens maybe in 1 out of 500 or 1000 systems, as webhosters and newest PHP versions increased already memory limit from 8 megs to 16 or more...)
Beat
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