i was having the IO ERROR and my images were 0x0 size too.
this AJAX Thumbnail Rebuild with the change on line 172 + changes on the php.ini file solved the problem, thanks.
the php.ini file looks like this:
[Verisign Payflow Pro]
pfpro.defaultport = 443
pfpro.defaulttimeout = 30
pfpro.defaulthost = "test-payflow.verisign.com"
[ODBC]
odbc.allow_persistent = On
odbc.defaultbinmode = 1
odbc.max_links = -1
odbc.check_persistent = On
odbc.defaultlrl = 4096
odbc.max_persistent = -1
[Assertion]
[mSQL]
msql.allow_persistent = On
msql.max_persistent = -1
msql.max_links = -1
[Sybase]
sybase.max_links = -1
sybase.compatability_mode = Off
sybase.min_error_severity = 10
sybase.allow_persistent = On
sybase.min_message_severity = 10
sybase.max_persistent = -1
[MySQL]
mysql.default_socket =
mysql.max_links = -1
mysql.default_password =
mysql.default_port =
mysql.allow_persistent = Off
mysql.max_persistent = -1
mysql.default_user =
mysql.default_host =
mysql.trace_mode = Off
mysql.connect_timeout = 60
[exif]
[Sybase-CT]
sybct.allow_persistent = On
sybct.max_persistent = -1
sybct.min_client_severity = 10
sybct.max_links = -1
sybct.min_server_severity = 10
[Session]
session.bug_compat_42 = 0
session.auto_start = 0
session.cache_limiter = nocache
session.bug_compat_warn = 1
url_rewriter.tags = "a=href,area=href,frame=src,input=src,form=fakeentry"
session.name = PHPSESSID
session.hash_function = 0
session.entropy_length = 0
session.serialize_handler = php
session.cookie_path = /
session.entropy_file =
session.gc_probability = 1
session.cache_expire = 180
session.gc_divisor = 1000
session.cookie_domain =
session.gc_maxlifetime = 1440
session.referer_check =
session.save_handler = files
session.cookie_lifetime = 0
session.use_cookies = 1
session.use_trans_sid = 0
session.hash_bits_per_character = 5
[mbstring]
[soap]
soap.wsdl_cache_ttl = 86400
soap.wsdl_cache_enabled = 1
soap.wsdl_cache_dir = /home/storage/2/42/e1/estadonews/tmp
[mail function]
sendmail_path = /usr/sbin/sendmail -t -i
smtp_port = 25
smtp = localhost
[PostgresSQL]
pgsql.max_links = -1
pgsql.allow_persistent = On
pgsql.log_notice = 0
pgsql.auto_reset_persistent = Off
pgsql.ignore_notice = 0
pgsql.max_persistent = -1
[Ingres II]
ingres.allow_persistent = On
ingres.default_password =
ingres.default_database =
ingres.max_persistent = -1
ingres.default_user =
ingres.max_links = -1
[SQL]
sql.safe_mode = Off
[bcmath]
bcmath.scale = 0
[MySQLi]
mysqli.default_host =
mysqli.default_pw =
mysqli.reconnect = Off
mysqli.default_user =
mysqli.default_socket =
mysqli.max_links = -1
mysqli.default_port = 3306
[Tidy]
tidy.clean_output = Off
[Syslog]
define_syslog_variables = Off
[browscap]
[Informix]
ifx.max_links = -1
ifx.byteasvarchar = 0
ifx.max_persistent = -1
ifx.default_password =
ifx.nullformat = 0
ifx.textasvarchar = 0
ifx.charasvarchar = 0
ifx.allow_persistent = On
ifx.blobinfile = 0
ifx.default_host =
ifx.default_user =
[FrontBase]
[PHP]
asp_tags = On
include_path = ".:/usr/share/pear"
ignore_repeated_source = Off
variables_order = "EGPCS"
track_errors = On
output_buffering = 4096
doc_root =
log_errors = On
safe_mode_allowed_env_vars = PHP_
safe_mode_protected_env_vars = LD_LIBRARY_PATH
auto_append_file =
disable_classes =
enable_dl = Off
display_startup_errors = Off
user_dir =
extension_dir = "/usr/lib/php/modules/"
register_argc_argv = On
display_errors = On
allow_call_time_pass_reference = Off
safe_mode_exec_dir =
default_socket_timeout = 60
register_globals = On
unserialize_callback_func =
y2k_compliance = On
magic_quotes_runtime = Off
expose_php = Off
log_errors_max_len = 1024
post_max_size = 105M
report_memleaks = On
engine = On
memory_limit = 64M
short_open_tag = On
upload_tmp_dir = /home/storage/2/42/e1/estadonews/tmp
max_execution_time = 300
safe_mode_include_dir =
serialize_precision = 100
precision = 14
upload_max_filesize = 100M
register_long_arrays = On
safe_mode = Off
zend.ze1_compatibility_mode = Off
zlib.output_compression = Off
ignore_repeated_errors = Off
default_mimetype = "text/html"
disable_functions =
file_uploads = On
magic_quotes_sybase = Off
max_input_time = 60
magic_quotes_gpc = Off
error_reporting = E_ALL & ~E_NOTICE
safe_mode_gid = Off
auto_prepend_file =
implicit_flush = Off
allow_url_fopen = Off
[com]
[MSSQL]
mssql.compatability_mode = Off
mssql.allow_persistent = Off
mssql.max_persistent = -1
mssql.min_error_severity = 10
mssql.min_message_severity = 10
mssql.max_links = -1
mssql.secure_connection = Off
session.save_path = "/var/lib/php-cgi/session"