Any solution?

This didn't solve issue. See also
TOPIC: FusionCharts will not save in Joomla 2.5
as it has same symptoms.

Hello,
that is exactly same problem than I have - posted earlier.
I changed value to long text as suggested but didn't help.
I have 50 columns and each has one value - cannot save or save and close - throws me to dashboard.
Values are not huge between -300 and 2100 - one value (no decimal) in each column.
If needed I can give admin access.

Hello,
that didn't solve the issue. But I found very strange solution.
I needed to do chart for 52 weeks (full year) and give value to each week. Everything went finely until week 49 appeared. Then everything got stuck - new velue was not saved. I rendered chart - looked ok - clicked save and I was thrown to main page in admin panel. Tried again - clicked save and close. Not working. Cleaned cache etc. without help.

I was using Single line 2D chart so as it shows information how I want. Changed type of chart Bar 2D and everything was shown correctly as that chart shoul. Saved now and then changed type back to Single line 2D - problem solved.

However it is not correct way to handle. Maybe you can try to reproduce issue like I did.

I have problem that has occurred few weeks ago. I have one chart that I will update manually on weekly basis but now I found out that last 3 weeks it has not updated so I was studying case a bit. I had old component so I bought new one - uninstalled old component and installed latest one. All charts are shown in admin panel but when I enter new value and press render chart in admin view - all is ok. But when I click component Save or Save and close those values disappear - not saved and chart is not rendered correctly. I have old Joomla 1.5.26 and server has latest PHP 5.3.18 and MySQL 5.5.28 installed.

Any idea what has happened - I have tried in IE, FF and Chrome - all same issue. So how I can update very important chart?

I have exactly same issue with IE8 and FF 3.6.13 // Joomla 1.5.22 & PHP 5.2.14
Have removed and installed again - plugin is published but I don't find add chart button...